Home / 99,745.20-137,648.52-54,423.39

Finding the Fourth Proportional to 99,745.20, 137,648.52 and 54,423.39

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Solution

The fourth proportional to 99,745.20, 137,648.52 and 54,423.39 is: 75,104.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,745.20 : 137,648.52 = 54,423.39 : x
  2. Step 2: Convert to fraction form
    99,745.20/137,648.52 = 54,423.39/x
  3. Step 3: Cross multiply
    99,745.20x = 137,648.52 × 54,423.39
  4. Step 4: Simplify right side
    99,745.20x = 7,491,299,086.88
  5. Step 5: Solve for x
    x = 7,491,299,086.88/99,745.20
  6. Step 6: Final answer
    x = 75,104.36

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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.