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Finding the Third Proportional to 87,836 and 131,515

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Solution

The third proportional to 87,836 and 131,515 is: 196,914.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,836 : 131,515 = 131,515 : x
  2. Step 2: Convert to fraction form
    87,836/131,515 = 131,515/x
  3. Step 3: Cross multiply
    87,836x = 131,515 × 131,515
  4. Step 4: Simplify right side
    87,836x = 17,296,195,225
  5. Step 5: Solve for x
    x = 17,296,195,225/87,836
  6. Step 6: Final answer
    x = 196,914.65

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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.