Home / 131,105.22-196,509.15-115,279.71

Finding the Fourth Proportional to 131,105.22, 196,509.15 and 115,279.71

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Solution

The fourth proportional to 131,105.22, 196,509.15 and 115,279.71 is: 172,788.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,105.22 : 196,509.15 = 115,279.71 : x
  2. Step 2: Convert to fraction form
    131,105.22/196,509.15 = 115,279.71/x
  3. Step 3: Cross multiply
    131,105.22x = 196,509.15 × 115,279.71
  4. Step 4: Simplify right side
    131,105.22x = 22,653,517,824.35
  5. Step 5: Solve for x
    x = 22,653,517,824.35/131,105.22
  6. Step 6: Final answer
    x = 172,788.83

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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.