Home / 129,418.80-194,174.92-45,191.38

Finding the Fourth Proportional to 129,418.80, 194,174.92 and 45,191.38

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Solution

The fourth proportional to 129,418.80, 194,174.92 and 45,191.38 is: 67,803.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,418.80 : 194,174.92 = 45,191.38 : x
  2. Step 2: Convert to fraction form
    129,418.80/194,174.92 = 45,191.38/x
  3. Step 3: Cross multiply
    129,418.80x = 194,174.92 × 45,191.38
  4. Step 4: Simplify right side
    129,418.80x = 8,775,032,596.19
  5. Step 5: Solve for x
    x = 8,775,032,596.19/129,418.80
  6. Step 6: Final answer
    x = 67,803.38

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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.