Home / 85,169.97-127,868.00-72,769.68

Finding the Fourth Proportional to 85,169.97, 127,868.00 and 72,769.68

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Solution

The fourth proportional to 85,169.97, 127,868.00 and 72,769.68 is: 109,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,169.97 : 127,868.00 = 72,769.68 : x
  2. Step 2: Convert to fraction form
    85,169.97/127,868.00 = 72,769.68/x
  3. Step 3: Cross multiply
    85,169.97x = 127,868.00 × 72,769.68
  4. Step 4: Simplify right side
    85,169.97x = 9,304,913,078.39
  5. Step 5: Solve for x
    x = 9,304,913,078.39/85,169.97
  6. Step 6: Final answer
    x = 109,251.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.