Finding the Fourth Proportional to 138,751.13, 207,951.47 and 115,656.41
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Solution
The fourth proportional to 138,751.13, 207,951.47 and 115,656.41 is: 173,338.56
Step by Step Solution
- Step 1: Write the proportion equation
138,751.13 : 207,951.47 = 115,656.41 : x - Step 2: Convert to fraction form
138,751.13/207,951.47 = 115,656.41/x - Step 3: Cross multiply
138,751.13x = 207,951.47 × 115,656.41 - Step 4: Simplify right side
138,751.13x = 24,050,920,849.73 - Step 5: Solve for x
x = 24,050,920,849.73/138,751.13 - Step 6: Final answer
x = 173,338.56
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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.