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Finding the Third Proportional to 81,256 and 177,416

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Solution

The third proportional to 81,256 and 177,416 is: 387,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,256 : 177,416 = 177,416 : x
  2. Step 2: Convert to fraction form
    81,256/177,416 = 177,416/x
  3. Step 3: Cross multiply
    81,256x = 177,416 × 177,416
  4. Step 4: Simplify right side
    81,256x = 31,476,437,056
  5. Step 5: Solve for x
    x = 31,476,437,056/81,256
  6. Step 6: Final answer
    x = 387,373.70

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.