Home / 129,839.16-194,839.38-83,125.56

Finding the Fourth Proportional to 129,839.16, 194,839.38 and 83,125.56

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Solution

The fourth proportional to 129,839.16, 194,839.38 and 83,125.56 is: 124,739.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,839.16 : 194,839.38 = 83,125.56 : x
  2. Step 2: Convert to fraction form
    129,839.16/194,839.38 = 83,125.56/x
  3. Step 3: Cross multiply
    129,839.16x = 194,839.38 × 83,125.56
  4. Step 4: Simplify right side
    129,839.16x = 16,196,132,572.55
  5. Step 5: Solve for x
    x = 16,196,132,572.55/129,839.16
  6. Step 6: Final answer
    x = 124,739.97

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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.