Home / 129,956.78-195,012.94-119,381.42

Finding the Fourth Proportional to 129,956.78, 195,012.94 and 119,381.42

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Solution

The fourth proportional to 129,956.78, 195,012.94 and 119,381.42 is: 179,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,956.78 : 195,012.94 = 119,381.42 : x
  2. Step 2: Convert to fraction form
    129,956.78/195,012.94 = 119,381.42/x
  3. Step 3: Cross multiply
    129,956.78x = 195,012.94 × 119,381.42
  4. Step 4: Simplify right side
    129,956.78x = 23,280,921,695.57
  5. Step 5: Solve for x
    x = 23,280,921,695.57/129,956.78
  6. Step 6: Final answer
    x = 179,143.57

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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.