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Finding the Third Proportional to 129,311 and 194,140

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Solution

The third proportional to 129,311 and 194,140 is: 291,470.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,311 : 194,140 = 194,140 : x
  2. Step 2: Convert to fraction form
    129,311/194,140 = 194,140/x
  3. Step 3: Cross multiply
    129,311x = 194,140 × 194,140
  4. Step 4: Simplify right side
    129,311x = 37,690,339,600
  5. Step 5: Solve for x
    x = 37,690,339,600/129,311
  6. Step 6: Final answer
    x = 291,470.48

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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.