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Finding the Fourth Proportional to 99,493.80, 137,296.98 and 54,170.64

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Solution

The fourth proportional to 99,493.80, 137,296.98 and 54,170.64 is: 74,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,493.80 : 137,296.98 = 54,170.64 : x
  2. Step 2: Convert to fraction form
    99,493.80/137,296.98 = 54,170.64/x
  3. Step 3: Cross multiply
    99,493.80x = 137,296.98 × 54,170.64
  4. Step 4: Simplify right side
    99,493.80x = 7,437,465,276.67
  5. Step 5: Solve for x
    x = 7,437,465,276.67/99,493.80
  6. Step 6: Final answer
    x = 74,753.05

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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.