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Finding the Fourth Proportional to 198,034.80, 297,129.92 and 87,149.04

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Solution

The fourth proportional to 198,034.80, 297,129.92 and 87,149.04 is: 130,757.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,034.80 : 297,129.92 = 87,149.04 : x
  2. Step 2: Convert to fraction form
    198,034.80/297,129.92 = 87,149.04/x
  3. Step 3: Cross multiply
    198,034.80x = 297,129.92 × 87,149.04
  4. Step 4: Simplify right side
    198,034.80x = 25,894,587,283.28
  5. Step 5: Solve for x
    x = 25,894,587,283.28/198,034.80
  6. Step 6: Final answer
    x = 130,757.76

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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.