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Finding the Third Proportional to 81,456 and 125,866.50

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Solution

The third proportional to 81,456 and 125,866.50 is: 194,489.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,456 : 125,866.50 = 125,866.50 : x
  2. Step 2: Convert to fraction form
    81,456/125,866.50 = 125,866.50/x
  3. Step 3: Cross multiply
    81,456x = 125,866.50 × 125,866.50
  4. Step 4: Simplify right side
    81,456x = 15,842,375,822.25
  5. Step 5: Solve for x
    x = 15,842,375,822.25/81,456
  6. Step 6: Final answer
    x = 194,489.98

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.