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Finding the Third Proportional to 92,170 and 137,678

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Solution

The third proportional to 92,170 and 137,678 is: 205,655.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,170 : 137,678 = 137,678 : x
  2. Step 2: Convert to fraction form
    92,170/137,678 = 137,678/x
  3. Step 3: Cross multiply
    92,170x = 137,678 × 137,678
  4. Step 4: Simplify right side
    92,170x = 18,955,231,684
  5. Step 5: Solve for x
    x = 18,955,231,684/92,170
  6. Step 6: Final answer
    x = 205,655.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.