iPad: 100 Million Sold by Mid-2012?

Back in March I asked a question: When will Apple sell its 100 millionth iPad? 

I now have the answer to my self-imposed question.

Apple started selling the iPad in the second quarter of last year. Sales increased every quarter until the end of 2010. Apple sold 28.13% more iPads in the third quarter than it did in the second, and 124.16% more in the fourth quarter than in the second. Applying those numbers to the 9.25 million iPads Apple sold in the second quarter of this year gives us 11.85 million iPads in the third quarter and 20.73 in the fourth. Those three numbers plus the 4.69 million Apple sold in the first quarter add up to 46.52 million iPads. (That number could turn out to be conservative because Apple couldn’t meet demand for most of 2010.)

Subtract that number and the 14.79 million iPads Apple sold last year from 100 million and you get 38.69 million iPads.

I think Apple will sell 36.89 million iPads during the first and second quarters of next year. If I’m right, then Apple will sell 100 million iPads in 2.25 years — that’s 64% of the time it took to sell 100 million iPhones, and 41% of the time it took to sell 100 million iPods.