Home / 135,879.12-187,535.52-79,279.56

Finding the Fourth Proportional to 135,879.12, 187,535.52 and 79,279.56

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Solution

The fourth proportional to 135,879.12, 187,535.52 and 79,279.56 is: 109,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,879.12 : 187,535.52 = 79,279.56 : x
  2. Step 2: Convert to fraction form
    135,879.12/187,535.52 = 79,279.56/x
  3. Step 3: Cross multiply
    135,879.12x = 187,535.52 × 79,279.56
  4. Step 4: Simplify right side
    135,879.12x = 14,867,733,509.97
  5. Step 5: Solve for x
    x = 14,867,733,509.97/135,879.12
  6. Step 6: Final answer
    x = 109,418.82

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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.