Home / 126,139.56-189,265.23-66,960.96

Finding the Fourth Proportional to 126,139.56, 189,265.23 and 66,960.96

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Solution

The fourth proportional to 126,139.56, 189,265.23 and 66,960.96 is: 100,471.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,139.56 : 189,265.23 = 66,960.96 : x
  2. Step 2: Convert to fraction form
    126,139.56/189,265.23 = 66,960.96/x
  3. Step 3: Cross multiply
    126,139.56x = 189,265.23 × 66,960.96
  4. Step 4: Simplify right side
    126,139.56x = 12,673,381,495.42
  5. Step 5: Solve for x
    x = 12,673,381,495.42/126,139.56
  6. Step 6: Final answer
    x = 100,471.11

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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.