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Finding the Third Proportional to 87,216.75 and 134,939.25

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Solution

The third proportional to 87,216.75 and 134,939.25 is: 208,774.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,216.75 : 134,939.25 = 134,939.25 : x
  2. Step 2: Convert to fraction form
    87,216.75/134,939.25 = 134,939.25/x
  3. Step 3: Cross multiply
    87,216.75x = 134,939.25 × 134,939.25
  4. Step 4: Simplify right side
    87,216.75x = 18,208,601,190.56
  5. Step 5: Solve for x
    x = 18,208,601,190.56/87,216.75
  6. Step 6: Final answer
    x = 208,774.13

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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.