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Finding the Fourth Proportional to 126,023.92, 189,035.88 and 103,747.96

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Solution

The fourth proportional to 126,023.92, 189,035.88 and 103,747.96 is: 155,621.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,023.92 : 189,035.88 = 103,747.96 : x
  2. Step 2: Convert to fraction form
    126,023.92/189,035.88 = 103,747.96/x
  3. Step 3: Cross multiply
    126,023.92x = 189,035.88 × 103,747.96
  4. Step 4: Simplify right side
    126,023.92x = 19,612,085,700.72
  5. Step 5: Solve for x
    x = 19,612,085,700.72/126,023.92
  6. Step 6: Final answer
    x = 155,621.93

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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.