Home / 126,169.92-189,381.11-90,672.89

Finding the Fourth Proportional to 126,169.92, 189,381.11 and 90,672.89

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Solution

The fourth proportional to 126,169.92, 189,381.11 and 90,672.89 is: 136,100.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,169.92 : 189,381.11 = 90,672.89 : x
  2. Step 2: Convert to fraction form
    126,169.92/189,381.11 = 90,672.89/x
  3. Step 3: Cross multiply
    126,169.92x = 189,381.11 × 90,672.89
  4. Step 4: Simplify right side
    126,169.92x = 17,171,731,154.84
  5. Step 5: Solve for x
    x = 17,171,731,154.84/126,169.92
  6. Step 6: Final answer
    x = 136,100.04

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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.