Finding the Fourth Proportional to 107,751.87, 161,177.67 and 75,728.70
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Solution
The fourth proportional to 107,751.87, 161,177.67 and 75,728.70 is: 113,276.69
Step by Step Solution
- Step 1: Write the proportion equation
107,751.87 : 161,177.67 = 75,728.70 : x - Step 2: Convert to fraction form
107,751.87/161,177.67 = 75,728.70/x - Step 3: Cross multiply
107,751.87x = 161,177.67 × 75,728.70 - Step 4: Simplify right side
107,751.87x = 12,205,775,418.13 - Step 5: Solve for x
x = 12,205,775,418.13/107,751.87 - Step 6: Final answer
x = 113,276.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.