Home / 99,976.12-137,967.30-54,654.64

Finding the Fourth Proportional to 99,976.12, 137,967.30 and 54,654.64

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Solution

The fourth proportional to 99,976.12, 137,967.30 and 54,654.64 is: 75,423.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,976.12 : 137,967.30 = 54,654.64 : x
  2. Step 2: Convert to fraction form
    99,976.12/137,967.30 = 54,654.64/x
  3. Step 3: Cross multiply
    99,976.12x = 137,967.30 × 54,654.64
  4. Step 4: Simplify right side
    99,976.12x = 7,540,553,113.27
  5. Step 5: Solve for x
    x = 7,540,553,113.27/99,976.12
  6. Step 6: Final answer
    x = 75,423.54

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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.