No, it's a price increase of 92%. You have to compare like-year dollars; comparing $3.69 (today's money) to $0.25 (1960 money) is not the right way to do it.
I fail to understand how that works. What are the parameters that give you a "today's money" to work with? How do you go about getting the figures to ascertain exactly what "today's money" really IS, compared with a dollar in 1960.
But then, I never was any good at math... that part is obvious. LOL!