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Finding the Third Proportional to 129,336 and 199,764

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Solution

The third proportional to 129,336 and 199,764 is: 308,542.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,336 : 199,764 = 199,764 : x
  2. Step 2: Convert to fraction form
    129,336/199,764 = 199,764/x
  3. Step 3: Cross multiply
    129,336x = 199,764 × 199,764
  4. Step 4: Simplify right side
    129,336x = 39,905,655,696
  5. Step 5: Solve for x
    x = 39,905,655,696/129,336
  6. Step 6: Final answer
    x = 308,542.52

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.