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Finding the Fourth Proportional to 119,871.97, 179,680.07 and 90,198.02

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Solution

The fourth proportional to 119,871.97, 179,680.07 and 90,198.02 is: 135,200.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,871.97 : 179,680.07 = 90,198.02 : x
  2. Step 2: Convert to fraction form
    119,871.97/179,680.07 = 90,198.02/x
  3. Step 3: Cross multiply
    119,871.97x = 179,680.07 × 90,198.02
  4. Step 4: Simplify right side
    119,871.97x = 16,206,787,222.16
  5. Step 5: Solve for x
    x = 16,206,787,222.16/119,871.97
  6. Step 6: Final answer
    x = 135,200.81

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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.