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Finding the Third Proportional to 80,712 and 171,312

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Solution

The third proportional to 80,712 and 171,312 is: 363,611.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,712 : 171,312 = 171,312 : x
  2. Step 2: Convert to fraction form
    80,712/171,312 = 171,312/x
  3. Step 3: Cross multiply
    80,712x = 171,312 × 171,312
  4. Step 4: Simplify right side
    80,712x = 29,347,801,344
  5. Step 5: Solve for x
    x = 29,347,801,344/80,712
  6. Step 6: Final answer
    x = 363,611.38

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.