Home / 140,834.75-194,351.96-81,218.75

Finding the Fourth Proportional to 140,834.75, 194,351.96 and 81,218.75

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Solution

The fourth proportional to 140,834.75, 194,351.96 and 81,218.75 is: 112,081.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,834.75 : 194,351.96 = 81,218.75 : x
  2. Step 2: Convert to fraction form
    140,834.75/194,351.96 = 81,218.75/x
  3. Step 3: Cross multiply
    140,834.75x = 194,351.96 × 81,218.75
  4. Step 4: Simplify right side
    140,834.75x = 15,785,022,845.16
  5. Step 5: Solve for x
    x = 15,785,022,845.16/140,834.75
  6. Step 6: Final answer
    x = 112,081.88

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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.