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Finding the Fourth Proportional to 99,800.60, 137,725.29 and 54,479.57

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Solution

The fourth proportional to 99,800.60, 137,725.29 and 54,479.57 is: 75,182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,800.60 : 137,725.29 = 54,479.57 : x
  2. Step 2: Convert to fraction form
    99,800.60/137,725.29 = 54,479.57/x
  3. Step 3: Cross multiply
    99,800.60x = 137,725.29 × 54,479.57
  4. Step 4: Simplify right side
    99,800.60x = 7,503,213,888.70
  5. Step 5: Solve for x
    x = 7,503,213,888.70/99,800.60
  6. Step 6: Final answer
    x = 75,182.06

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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.