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Finding the Fourth Proportional to 129,633, 194,443 and 50,761.68

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Solution

The fourth proportional to 129,633, 194,443 and 50,761.68 is: 76,139.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,633 : 194,443 = 50,761.68 : x
  2. Step 2: Convert to fraction form
    129,633/194,443 = 50,761.68/x
  3. Step 3: Cross multiply
    129,633x = 194,443 × 50,761.68
  4. Step 4: Simplify right side
    129,633x = 9,870,253,344.24
  5. Step 5: Solve for x
    x = 9,870,253,344.24/129,633
  6. Step 6: Final answer
    x = 76,139.97

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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.