Home / 100,545.92-138,719.59-56,932.52

Finding the Fourth Proportional to 100,545.92, 138,719.59 and 56,932.52

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Solution

The fourth proportional to 100,545.92, 138,719.59 and 56,932.52 is: 78,547.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,545.92 : 138,719.59 = 56,932.52 : x
  2. Step 2: Convert to fraction form
    100,545.92/138,719.59 = 56,932.52/x
  3. Step 3: Cross multiply
    100,545.92x = 138,719.59 × 56,932.52
  4. Step 4: Simplify right side
    100,545.92x = 7,897,656,401.21
  5. Step 5: Solve for x
    x = 7,897,656,401.21/100,545.92
  6. Step 6: Final answer
    x = 78,547.76

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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.