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Finding the Third Proportional to 68,412 and 109,287

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Solution

The third proportional to 68,412 and 109,287 is: 174,584.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,412 : 109,287 = 109,287 : x
  2. Step 2: Convert to fraction form
    68,412/109,287 = 109,287/x
  3. Step 3: Cross multiply
    68,412x = 109,287 × 109,287
  4. Step 4: Simplify right side
    68,412x = 11,943,648,369
  5. Step 5: Solve for x
    x = 11,943,648,369/68,412
  6. Step 6: Final answer
    x = 174,584.11

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.