Home / 138,930.20-191,713.08-84,474.80

Finding the Fourth Proportional to 138,930.20, 191,713.08 and 84,474.80

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Solution

The fourth proportional to 138,930.20, 191,713.08 and 84,474.80 is: 116,568.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,930.20 : 191,713.08 = 84,474.80 : x
  2. Step 2: Convert to fraction form
    138,930.20/191,713.08 = 84,474.80/x
  3. Step 3: Cross multiply
    138,930.20x = 191,713.08 × 84,474.80
  4. Step 4: Simplify right side
    138,930.20x = 16,194,923,668.01
  5. Step 5: Solve for x
    x = 16,194,923,668.01/138,930.20
  6. Step 6: Final answer
    x = 116,568.78

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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.