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Finding the Fourth Proportional to 159,543.60, 239,023.80 and 129,800.40

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Solution

The fourth proportional to 159,543.60, 239,023.80 and 129,800.40 is: 194,463.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,543.60 : 239,023.80 = 129,800.40 : x
  2. Step 2: Convert to fraction form
    159,543.60/239,023.80 = 129,800.40/x
  3. Step 3: Cross multiply
    159,543.60x = 239,023.80 × 129,800.40
  4. Step 4: Simplify right side
    159,543.60x = 31,025,384,849.52
  5. Step 5: Solve for x
    x = 31,025,384,849.52/159,543.60
  6. Step 6: Final answer
    x = 194,463.36

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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.