Home / 126,491.54-189,770.10-67,278.50

Finding the Fourth Proportional to 126,491.54, 189,770.10 and 67,278.50

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Solution

The fourth proportional to 126,491.54, 189,770.10 and 67,278.50 is: 100,935.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,491.54 : 189,770.10 = 67,278.50 : x
  2. Step 2: Convert to fraction form
    126,491.54/189,770.10 = 67,278.50/x
  3. Step 3: Cross multiply
    126,491.54x = 189,770.10 × 67,278.50
  4. Step 4: Simplify right side
    126,491.54x = 12,767,447,672.85
  5. Step 5: Solve for x
    x = 12,767,447,672.85/126,491.54
  6. Step 6: Final answer
    x = 100,935.19

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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.