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Finding the Third Proportional to 81,762 and 126,645

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Solution

The third proportional to 81,762 and 126,645 is: 196,166.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,762 : 126,645 = 126,645 : x
  2. Step 2: Convert to fraction form
    81,762/126,645 = 126,645/x
  3. Step 3: Cross multiply
    81,762x = 126,645 × 126,645
  4. Step 4: Simplify right side
    81,762x = 16,038,956,025
  5. Step 5: Solve for x
    x = 16,038,956,025/81,762
  6. Step 6: Final answer
    x = 196,166.39

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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.