Home / 87,132.41-130,108.43-69,161.45

Finding the Fourth Proportional to 87,132.41, 130,108.43 and 69,161.45

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Solution

The fourth proportional to 87,132.41, 130,108.43 and 69,161.45 is: 103,273.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,132.41 : 130,108.43 = 69,161.45 : x
  2. Step 2: Convert to fraction form
    87,132.41/130,108.43 = 69,161.45/x
  3. Step 3: Cross multiply
    87,132.41x = 130,108.43 × 69,161.45
  4. Step 4: Simplify right side
    87,132.41x = 8,998,487,930.24
  5. Step 5: Solve for x
    x = 8,998,487,930.24/87,132.41
  6. Step 6: Final answer
    x = 103,273.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.