math is hard for me. help

Question

a model skyscraper is 6 inches tall. if the model is scaled 1 inch : 200 feet, the skyscraper is ____ tall

Answer 1

S/200 = 6/1

ratio of feet to feet = ratio of inches to inches

S = 6(200) = 1200 feet = the Skyscraper's height

or you could have done it as a ratio of feet to inches = ratio of feet to inches

S/6 = 200/1

cross multiply

S = 1,200 feet