Home / 159,742.38-239,761.12-80,911.96

Finding the Fourth Proportional to 159,742.38, 239,761.12 and 80,911.96

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Solution

The fourth proportional to 159,742.38, 239,761.12 and 80,911.96 is: 121,442.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,742.38 : 239,761.12 = 80,911.96 : x
  2. Step 2: Convert to fraction form
    159,742.38/239,761.12 = 80,911.96/x
  3. Step 3: Cross multiply
    159,742.38x = 239,761.12 × 80,911.96
  4. Step 4: Simplify right side
    159,742.38x = 19,399,542,151.00
  5. Step 5: Solve for x
    x = 19,399,542,151.00/159,742.38
  6. Step 6: Final answer
    x = 121,442.68

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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.