Home / 129,993.24-179,391.85-76,279.15

Finding the Fourth Proportional to 129,993.24, 179,391.85 and 76,279.15

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Solution

The fourth proportional to 129,993.24, 179,391.85 and 76,279.15 is: 105,265.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,993.24 : 179,391.85 = 76,279.15 : x
  2. Step 2: Convert to fraction form
    129,993.24/179,391.85 = 76,279.15/x
  3. Step 3: Cross multiply
    129,993.24x = 179,391.85 × 76,279.15
  4. Step 4: Simplify right side
    129,993.24x = 13,683,857,834.93
  5. Step 5: Solve for x
    x = 13,683,857,834.93/129,993.24
  6. Step 6: Final answer
    x = 105,265.92

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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.