Home / 131,489.28-181,468.56-80,535.66

Finding the Fourth Proportional to 131,489.28, 181,468.56 and 80,535.66

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Solution

The fourth proportional to 131,489.28, 181,468.56 and 80,535.66 is: 111,147.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,489.28 : 181,468.56 = 80,535.66 : x
  2. Step 2: Convert to fraction form
    131,489.28/181,468.56 = 80,535.66/x
  3. Step 3: Cross multiply
    131,489.28x = 181,468.56 × 80,535.66
  4. Step 4: Simplify right side
    131,489.28x = 14,614,690,248.85
  5. Step 5: Solve for x
    x = 14,614,690,248.85/131,489.28
  6. Step 6: Final answer
    x = 111,147.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.