Finding the Fourth Proportional to 87,634.10, 131,451.15 and 87,115.70
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Solution
The fourth proportional to 87,634.10, 131,451.15 and 87,115.70 is: 130,673.55
Step by Step Solution
- Step 1: Write the proportion equation
87,634.10 : 131,451.15 = 87,115.70 : x - Step 2: Convert to fraction form
87,634.10/131,451.15 = 87,115.70/x - Step 3: Cross multiply
87,634.10x = 131,451.15 × 87,115.70 - Step 4: Simplify right side
87,634.10x = 11,451,458,948.06 - Step 5: Solve for x
x = 11,451,458,948.06/87,634.10 - Step 6: Final answer
x = 130,673.55
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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.