I've read that the average inseam to torso ratio is 45%. (For me, 187 cm height with 91 cm ends up being 48.6%.) I was curious to how much shorter my torso is compared to normal, but trying the math confused me. If I start with the 187 height, my inseam would need to be 84 cm to give me 45%, meaning my torso is 7 cm shorter than normal. But, if I use the 91 cm inseam, my total height needs to be 202 cm, giving me a 15 cm shorter than normal ratio. (At least now I know why 4 bike fitters couldn't come up with a comfortable and efficient position for me!) Any ideas which it is . . . or perhaps I'd have to split the difference? (Forgive me if the answer is obvious, but I'm no mathamatition.)