Home / 100,311.11-138,449.73-92,231.96

Finding the Fourth Proportional to 100,311.11, 138,449.73 and 92,231.96

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Solution

The fourth proportional to 100,311.11, 138,449.73 and 92,231.96 is: 127,298.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,311.11 : 138,449.73 = 92,231.96 : x
  2. Step 2: Convert to fraction form
    100,311.11/138,449.73 = 92,231.96/x
  3. Step 3: Cross multiply
    100,311.11x = 138,449.73 × 92,231.96
  4. Step 4: Simplify right side
    100,311.11x = 12,769,490,327.06
  5. Step 5: Solve for x
    x = 12,769,490,327.06/100,311.11
  6. Step 6: Final answer
    x = 127,298.87

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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.