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Finding the Third Proportional to 82,721.50 and 179,439

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Solution

The third proportional to 82,721.50 and 179,439 is: 389,238.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,721.50 : 179,439 = 179,439 : x
  2. Step 2: Convert to fraction form
    82,721.50/179,439 = 179,439/x
  3. Step 3: Cross multiply
    82,721.50x = 179,439 × 179,439
  4. Step 4: Simplify right side
    82,721.50x = 32,198,354,721
  5. Step 5: Solve for x
    x = 32,198,354,721/82,721.50
  6. Step 6: Final answer
    x = 389,238.04

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.