Home / 99,542.20-137,396.46-65,575.48

Finding the Fourth Proportional to 99,542.20, 137,396.46 and 65,575.48

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Solution

The fourth proportional to 99,542.20, 137,396.46 and 65,575.48 is: 90,512.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,542.20 : 137,396.46 = 65,575.48 : x
  2. Step 2: Convert to fraction form
    99,542.20/137,396.46 = 65,575.48/x
  3. Step 3: Cross multiply
    99,542.20x = 137,396.46 × 65,575.48
  4. Step 4: Simplify right side
    99,542.20x = 9,009,838,814.80
  5. Step 5: Solve for x
    x = 9,009,838,814.80/99,542.20
  6. Step 6: Final answer
    x = 90,512.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.