Home / 99,480.08-137,177.28-76,822.72

Finding the Fourth Proportional to 99,480.08, 137,177.28 and 76,822.72

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Solution

The fourth proportional to 99,480.08, 137,177.28 and 76,822.72 is: 105,934.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,480.08 : 137,177.28 = 76,822.72 : x
  2. Step 2: Convert to fraction form
    99,480.08/137,177.28 = 76,822.72/x
  3. Step 3: Cross multiply
    99,480.08x = 137,177.28 × 76,822.72
  4. Step 4: Simplify right side
    99,480.08x = 10,538,331,771.80
  5. Step 5: Solve for x
    x = 10,538,331,771.80/99,480.08
  6. Step 6: Final answer
    x = 105,934.09

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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.