Home / 87,918.57-131,501.07-81,536.97

Finding the Fourth Proportional to 87,918.57, 131,501.07 and 81,536.97

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Solution

The fourth proportional to 87,918.57, 131,501.07 and 81,536.97 is: 121,956.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,918.57 : 131,501.07 = 81,536.97 : x
  2. Step 2: Convert to fraction form
    87,918.57/131,501.07 = 81,536.97/x
  3. Step 3: Cross multiply
    87,918.57x = 131,501.07 × 81,536.97
  4. Step 4: Simplify right side
    87,918.57x = 10,722,198,799.56
  5. Step 5: Solve for x
    x = 10,722,198,799.56/87,918.57
  6. Step 6: Final answer
    x = 121,956.02

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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.