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Finding the Third Proportional to 81,754 and 126,639

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Solution

The third proportional to 81,754 and 126,639 is: 196,166.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,754 : 126,639 = 126,639 : x
  2. Step 2: Convert to fraction form
    81,754/126,639 = 126,639/x
  3. Step 3: Cross multiply
    81,754x = 126,639 × 126,639
  4. Step 4: Simplify right side
    81,754x = 16,037,436,321
  5. Step 5: Solve for x
    x = 16,037,436,321/81,754
  6. Step 6: Final answer
    x = 196,166.99

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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.