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Finding the Third Proportional to 81,255 and 171,381

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Solution

The third proportional to 81,255 and 171,381 is: 361,472.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,255 : 171,381 = 171,381 : x
  2. Step 2: Convert to fraction form
    81,255/171,381 = 171,381/x
  3. Step 3: Cross multiply
    81,255x = 171,381 × 171,381
  4. Step 4: Simplify right side
    81,255x = 29,371,447,161
  5. Step 5: Solve for x
    x = 29,371,447,161/81,255
  6. Step 6: Final answer
    x = 361,472.49

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.