Home / 99,540.68-137,364.97-54,218.52

Finding the Fourth Proportional to 99,540.68, 137,364.97 and 54,218.52

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Solution

The fourth proportional to 99,540.68, 137,364.97 and 54,218.52 is: 74,820.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,540.68 : 137,364.97 = 54,218.52 : x
  2. Step 2: Convert to fraction form
    99,540.68/137,364.97 = 54,218.52/x
  3. Step 3: Cross multiply
    99,540.68x = 137,364.97 × 54,218.52
  4. Step 4: Simplify right side
    99,540.68x = 7,447,725,102.15
  5. Step 5: Solve for x
    x = 7,447,725,102.15/99,540.68
  6. Step 6: Final answer
    x = 74,820.92

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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.