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Finding the Fourth Proportional to 129,094.74, 193,227.70 and 68,972.97

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Solution

The fourth proportional to 129,094.74, 193,227.70 and 68,972.97 is: 103,238.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,094.74 : 193,227.70 = 68,972.97 : x
  2. Step 2: Convert to fraction form
    129,094.74/193,227.70 = 68,972.97/x
  3. Step 3: Cross multiply
    129,094.74x = 193,227.70 × 68,972.97
  4. Step 4: Simplify right side
    129,094.74x = 13,327,488,355.27
  5. Step 5: Solve for x
    x = 13,327,488,355.27/129,094.74
  6. Step 6: Final answer
    x = 103,238.04

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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.