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Finding the Third Proportional to 79,831 and 133,045

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Solution

The third proportional to 79,831 and 133,045 is: 221,730.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,831 : 133,045 = 133,045 : x
  2. Step 2: Convert to fraction form
    79,831/133,045 = 133,045/x
  3. Step 3: Cross multiply
    79,831x = 133,045 × 133,045
  4. Step 4: Simplify right side
    79,831x = 17,700,972,025
  5. Step 5: Solve for x
    x = 17,700,972,025/79,831
  6. Step 6: Final answer
    x = 221,730.56

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.