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Finding the Third Proportional to 81,963 and 130,329

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Solution

The third proportional to 81,963 and 130,329 is: 207,235.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,963 : 130,329 = 130,329 : x
  2. Step 2: Convert to fraction form
    81,963/130,329 = 130,329/x
  3. Step 3: Cross multiply
    81,963x = 130,329 × 130,329
  4. Step 4: Simplify right side
    81,963x = 16,985,648,241
  5. Step 5: Solve for x
    x = 16,985,648,241/81,963
  6. Step 6: Final answer
    x = 207,235.56

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.