Home / 137,279.12-189,434.72-76,835.92

Finding the Fourth Proportional to 137,279.12, 189,434.72 and 76,835.92

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Solution

The fourth proportional to 137,279.12, 189,434.72 and 76,835.92 is: 106,027.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,279.12 : 189,434.72 = 76,835.92 : x
  2. Step 2: Convert to fraction form
    137,279.12/189,434.72 = 76,835.92/x
  3. Step 3: Cross multiply
    137,279.12x = 189,434.72 × 76,835.92
  4. Step 4: Simplify right side
    137,279.12x = 14,555,390,991.14
  5. Step 5: Solve for x
    x = 14,555,390,991.14/137,279.12
  6. Step 6: Final answer
    x = 106,027.71

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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.