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Finding the Fourth Proportional to 119,249.70, 178,863.54 and 40,354.86

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Solution

The fourth proportional to 119,249.70, 178,863.54 and 40,354.86 is: 60,528.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,249.70 : 178,863.54 = 40,354.86 : x
  2. Step 2: Convert to fraction form
    119,249.70/178,863.54 = 40,354.86/x
  3. Step 3: Cross multiply
    119,249.70x = 178,863.54 × 40,354.86
  4. Step 4: Simplify right side
    119,249.70x = 7,218,013,115.80
  5. Step 5: Solve for x
    x = 7,218,013,115.80/119,249.70
  6. Step 6: Final answer
    x = 60,528.56

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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.