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Finding the Third Proportional to 80,931 and 122,489.50

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Solution

The third proportional to 80,931 and 122,489.50 is: 185,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,931 : 122,489.50 = 122,489.50 : x
  2. Step 2: Convert to fraction form
    80,931/122,489.50 = 122,489.50/x
  3. Step 3: Cross multiply
    80,931x = 122,489.50 × 122,489.50
  4. Step 4: Simplify right side
    80,931x = 15,003,677,610.25
  5. Step 5: Solve for x
    x = 15,003,677,610.25/80,931
  6. Step 6: Final answer
    x = 185,388.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.