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Finding the Fourth Proportional to 139,882.14, 209,885.18 and 73,306.42

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Solution

The fourth proportional to 139,882.14, 209,885.18 and 73,306.42 is: 109,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,882.14 : 209,885.18 = 73,306.42 : x
  2. Step 2: Convert to fraction form
    139,882.14/209,885.18 = 73,306.42/x
  3. Step 3: Cross multiply
    139,882.14x = 209,885.18 × 73,306.42
  4. Step 4: Simplify right side
    139,882.14x = 15,385,930,265.61
  5. Step 5: Solve for x
    x = 15,385,930,265.61/139,882.14
  6. Step 6: Final answer
    x = 109,992.10

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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.