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Finding the Third Proportional to 81,098 and 177,742

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Solution

The third proportional to 81,098 and 177,742 is: 389,556.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,098 : 177,742 = 177,742 : x
  2. Step 2: Convert to fraction form
    81,098/177,742 = 177,742/x
  3. Step 3: Cross multiply
    81,098x = 177,742 × 177,742
  4. Step 4: Simplify right side
    81,098x = 31,592,218,564
  5. Step 5: Solve for x
    x = 31,592,218,564/81,098
  6. Step 6: Final answer
    x = 389,556.07

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.