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Finding the Third Proportional to 120,729.75 and 163,966.50

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Solution

The third proportional to 120,729.75 and 163,966.50 is: 222,687.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729.75 : 163,966.50 = 163,966.50 : x
  2. Step 2: Convert to fraction form
    120,729.75/163,966.50 = 163,966.50/x
  3. Step 3: Cross multiply
    120,729.75x = 163,966.50 × 163,966.50
  4. Step 4: Simplify right side
    120,729.75x = 26,885,013,122.25
  5. Step 5: Solve for x
    x = 26,885,013,122.25/120,729.75
  6. Step 6: Final answer
    x = 222,687.56

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.