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Finding the Fourth Proportional to 139,882.32, 209,885.50 and 73,306.62

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Solution

The fourth proportional to 139,882.32, 209,885.50 and 73,306.62 is: 109,992.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,882.32 : 209,885.50 = 73,306.62 : x
  2. Step 2: Convert to fraction form
    139,882.32/209,885.50 = 73,306.62/x
  3. Step 3: Cross multiply
    139,882.32x = 209,885.50 × 73,306.62
  4. Step 4: Simplify right side
    139,882.32x = 15,385,996,683.64
  5. Step 5: Solve for x
    x = 15,385,996,683.64/139,882.32
  6. Step 6: Final answer
    x = 109,992.43

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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.