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Finding the Fourth Proportional to 99,800.56, 137,725.11 and 54,479.54

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Solution

The fourth proportional to 99,800.56, 137,725.11 and 54,479.54 is: 75,181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,800.56 : 137,725.11 = 54,479.54 : x
  2. Step 2: Convert to fraction form
    99,800.56/137,725.11 = 54,479.54/x
  3. Step 3: Cross multiply
    99,800.56x = 137,725.11 × 54,479.54
  4. Step 4: Simplify right side
    99,800.56x = 7,503,200,208.86
  5. Step 5: Solve for x
    x = 7,503,200,208.86/99,800.56
  6. Step 6: Final answer
    x = 75,181.95

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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.