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Finding the Third Proportional to 86,171.75 and 129,348.75

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Solution

The third proportional to 86,171.75 and 129,348.75 is: 194,159.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,171.75 : 129,348.75 = 129,348.75 : x
  2. Step 2: Convert to fraction form
    86,171.75/129,348.75 = 129,348.75/x
  3. Step 3: Cross multiply
    86,171.75x = 129,348.75 × 129,348.75
  4. Step 4: Simplify right side
    86,171.75x = 16,731,099,126.56
  5. Step 5: Solve for x
    x = 16,731,099,126.56/86,171.75
  6. Step 6: Final answer
    x = 194,159.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.