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Finding the Fourth Proportional to 139,226.85, 208,863.97 and 54,942.91

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Solution

The fourth proportional to 139,226.85, 208,863.97 and 54,942.91 is: 82,423.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,226.85 : 208,863.97 = 54,942.91 : x
  2. Step 2: Convert to fraction form
    139,226.85/208,863.97 = 54,942.91/x
  3. Step 3: Cross multiply
    139,226.85x = 208,863.97 × 54,942.91
  4. Step 4: Simplify right side
    139,226.85x = 11,475,593,646.44
  5. Step 5: Solve for x
    x = 11,475,593,646.44/139,226.85
  6. Step 6: Final answer
    x = 82,423.71

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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.