Home / 99,520.58-137,338.52-54,198.64

Finding the Fourth Proportional to 99,520.58, 137,338.52 and 54,198.64

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Solution

The fourth proportional to 99,520.58, 137,338.52 and 54,198.64 is: 74,794.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,520.58 : 137,338.52 = 54,198.64 : x
  2. Step 2: Convert to fraction form
    99,520.58/137,338.52 = 54,198.64/x
  3. Step 3: Cross multiply
    99,520.58x = 137,338.52 × 54,198.64
  4. Step 4: Simplify right side
    99,520.58x = 7,443,561,003.61
  5. Step 5: Solve for x
    x = 7,443,561,003.61/99,520.58
  6. Step 6: Final answer
    x = 74,794.19

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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.