Home / 126,142.56-189,269.73-66,963.96

Finding the Fourth Proportional to 126,142.56, 189,269.73 and 66,963.96

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Solution

The fourth proportional to 126,142.56, 189,269.73 and 66,963.96 is: 100,475.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,142.56 : 189,269.73 = 66,963.96 : x
  2. Step 2: Convert to fraction form
    126,142.56/189,269.73 = 66,963.96/x
  3. Step 3: Cross multiply
    126,142.56x = 189,269.73 × 66,963.96
  4. Step 4: Simplify right side
    126,142.56x = 12,674,250,628.93
  5. Step 5: Solve for x
    x = 12,674,250,628.93/126,142.56
  6. Step 6: Final answer
    x = 100,475.61

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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.