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Finding the Third Proportional to 36,172 and 87,131

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Solution

The third proportional to 36,172 and 87,131 is: 209,880.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,172 : 87,131 = 87,131 : x
  2. Step 2: Convert to fraction form
    36,172/87,131 = 87,131/x
  3. Step 3: Cross multiply
    36,172x = 87,131 × 87,131
  4. Step 4: Simplify right side
    36,172x = 7,591,811,161
  5. Step 5: Solve for x
    x = 7,591,811,161/36,172
  6. Step 6: Final answer
    x = 209,880.88

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.