Home / 138,800.82-191,545.23-75,138.66

Finding the Fourth Proportional to 138,800.82, 191,545.23 and 75,138.66

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Solution

The fourth proportional to 138,800.82, 191,545.23 and 75,138.66 is: 103,691.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,800.82 : 191,545.23 = 75,138.66 : x
  2. Step 2: Convert to fraction form
    138,800.82/191,545.23 = 75,138.66/x
  3. Step 3: Cross multiply
    138,800.82x = 191,545.23 × 75,138.66
  4. Step 4: Simplify right side
    138,800.82x = 14,392,451,535.90
  5. Step 5: Solve for x
    x = 14,392,451,535.90/138,800.82
  6. Step 6: Final answer
    x = 103,691.41

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1.5x scale

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.