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Finding the Third Proportional to 79,660.97 and 172,390.78

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Solution

The third proportional to 79,660.97 and 172,390.78 is: 373,063.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.97 : 172,390.78 = 172,390.78 : x
  2. Step 2: Convert to fraction form
    79,660.97/172,390.78 = 172,390.78/x
  3. Step 3: Cross multiply
    79,660.97x = 172,390.78 × 172,390.78
  4. Step 4: Simplify right side
    79,660.97x = 29,718,581,459.99
  5. Step 5: Solve for x
    x = 29,718,581,459.99/79,660.97
  6. Step 6: Final answer
    x = 373,063.27

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.