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Finding the Third Proportional to 83,510 and 129,329

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Solution

The third proportional to 83,510 and 129,329 is: 200,287.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,510 : 129,329 = 129,329 : x
  2. Step 2: Convert to fraction form
    83,510/129,329 = 129,329/x
  3. Step 3: Cross multiply
    83,510x = 129,329 × 129,329
  4. Step 4: Simplify right side
    83,510x = 16,725,990,241
  5. Step 5: Solve for x
    x = 16,725,990,241/83,510
  6. Step 6: Final answer
    x = 200,287.27

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.