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Finding the Fourth Proportional to 138,794.92, 208,149.35 and 50,036.94

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Solution

The fourth proportional to 138,794.92, 208,149.35 and 50,036.94 is: 75,039.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,794.92 : 208,149.35 = 50,036.94 : x
  2. Step 2: Convert to fraction form
    138,794.92/208,149.35 = 50,036.94/x
  3. Step 3: Cross multiply
    138,794.92x = 208,149.35 × 50,036.94
  4. Step 4: Simplify right side
    138,794.92x = 10,415,156,286.80
  5. Step 5: Solve for x
    x = 10,415,156,286.80/138,794.92
  6. Step 6: Final answer
    x = 75,039.90

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1.5x scale

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.