Finding the Fourth Proportional to 118,229.70, 176,912.55 and 87,125.70
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Solution
The fourth proportional to 118,229.70, 176,912.55 and 87,125.70 is: 130,370.20
Step by Step Solution
- Step 1: Write the proportion equation
118,229.70 : 176,912.55 = 87,125.70 : x - Step 2: Convert to fraction form
118,229.70/176,912.55 = 87,125.70/x - Step 3: Cross multiply
118,229.70x = 176,912.55 × 87,125.70 - Step 4: Simplify right side
118,229.70x = 15,413,629,757.54 - Step 5: Solve for x
x = 15,413,629,757.54/118,229.70 - Step 6: Final answer
x = 130,370.20
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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.