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Finding the Third Proportional to 87,616.69 and 136,721.67

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Solution

The third proportional to 87,616.69 and 136,721.67 is: 213,347.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,616.69 : 136,721.67 = 136,721.67 : x
  2. Step 2: Convert to fraction form
    87,616.69/136,721.67 = 136,721.67/x
  3. Step 3: Cross multiply
    87,616.69x = 136,721.67 × 136,721.67
  4. Step 4: Simplify right side
    87,616.69x = 18,692,815,560.30
  5. Step 5: Solve for x
    x = 18,692,815,560.30/87,616.69
  6. Step 6: Final answer
    x = 213,347.66

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.