Finding the Fourth Proportional to 157,447,692.07, 217,321,036.40 and 91,389,471.99
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Solution
The fourth proportional to 157,447,692.07, 217,321,036.40 and 91,389,471.99 is: 126,142,558.89
Step by Step Solution
- Step 1: Write the proportion equation
157,447,692.07 : 217,321,036.40 = 91,389,471.99 : x - Step 2: Convert to fraction form
157,447,692.07/217,321,036.40 = 91,389,471.99/x - Step 3: Cross multiply
157,447,692.07x = 217,321,036.40 × 91,389,471.99 - Step 4: Simplify right side
157,447,692.07x = 19,860,854,768,915,568 - Step 5: Solve for x
x = 19,860,854,768,915,568/157,447,692.07 - Step 6: Final answer
x = 126,142,558.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.