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Finding the Third Proportional to 81,254 and 129,752

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Solution

The third proportional to 81,254 and 129,752 is: 207,196.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,254 : 129,752 = 129,752 : x
  2. Step 2: Convert to fraction form
    81,254/129,752 = 129,752/x
  3. Step 3: Cross multiply
    81,254x = 129,752 × 129,752
  4. Step 4: Simplify right side
    81,254x = 16,835,581,504
  5. Step 5: Solve for x
    x = 16,835,581,504/81,254
  6. Step 6: Final answer
    x = 207,196.96

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.