Home / 129,306.60-178,408.24-75,604.82

Finding the Fourth Proportional to 129,306.60, 178,408.24 and 75,604.82

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Solution

The fourth proportional to 129,306.60, 178,408.24 and 75,604.82 is: 104,314.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,306.60 : 178,408.24 = 75,604.82 : x
  2. Step 2: Convert to fraction form
    129,306.60/178,408.24 = 75,604.82/x
  3. Step 3: Cross multiply
    129,306.60x = 178,408.24 × 75,604.82
  4. Step 4: Simplify right side
    129,306.60x = 13,488,521,790.66
  5. Step 5: Solve for x
    x = 13,488,521,790.66/129,306.60
  6. Step 6: Final answer
    x = 104,314.26

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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.