Home / 87,589.98-131,543.36-80,919.29

Finding the Fourth Proportional to 87,589.98, 131,543.36 and 80,919.29

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Solution

The fourth proportional to 87,589.98, 131,543.36 and 80,919.29 is: 121,525.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,589.98 : 131,543.36 = 80,919.29 : x
  2. Step 2: Convert to fraction form
    87,589.98/131,543.36 = 80,919.29/x
  3. Step 3: Cross multiply
    87,589.98x = 131,543.36 × 80,919.29
  4. Step 4: Simplify right side
    87,589.98x = 10,644,395,219.68
  5. Step 5: Solve for x
    x = 10,644,395,219.68/87,589.98
  6. Step 6: Final answer
    x = 121,525.26

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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.