Question 1105462
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a = shortest distance on paper = 7 cm
b = shortest distance in real life = 112 km


c = longest distance on paper = 14 cm
d = longest distance in real life = x km


The corresponding sides form a proportion. 
a/b = c/d
7/112 = 14/x ... plug in the values for a through d (see above)
7*x = 112*14 ... cross multiply
7x = 1568
7x/7 = 1568/7 ... divide both sides by 7
x = 224


Answer: 224 kilometers
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