Home / 129,975.80-194,963.70-79,456.10

Finding the Fourth Proportional to 129,975.80, 194,963.70 and 79,456.10

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Solution

The fourth proportional to 129,975.80, 194,963.70 and 79,456.10 is: 119,184.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,975.80 : 194,963.70 = 79,456.10 : x
  2. Step 2: Convert to fraction form
    129,975.80/194,963.70 = 79,456.10/x
  3. Step 3: Cross multiply
    129,975.80x = 194,963.70 × 79,456.10
  4. Step 4: Simplify right side
    129,975.80x = 15,491,055,243.57
  5. Step 5: Solve for x
    x = 15,491,055,243.57/129,975.80
  6. Step 6: Final answer
    x = 119,184.15

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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.