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Finding the Third Proportional to 82,782 and 124,416

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Solution

The third proportional to 82,782 and 124,416 is: 186,989.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,782 : 124,416 = 124,416 : x
  2. Step 2: Convert to fraction form
    82,782/124,416 = 124,416/x
  3. Step 3: Cross multiply
    82,782x = 124,416 × 124,416
  4. Step 4: Simplify right side
    82,782x = 15,479,341,056
  5. Step 5: Solve for x
    x = 15,479,341,056/82,782
  6. Step 6: Final answer
    x = 186,989.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.