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Finding the Fourth Proportional to 126,375.61, 189,510.71 and 51,444.89

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Solution

The fourth proportional to 126,375.61, 189,510.71 and 51,444.89 is: 77,145.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,375.61 : 189,510.71 = 51,444.89 : x
  2. Step 2: Convert to fraction form
    126,375.61/189,510.71 = 51,444.89/x
  3. Step 3: Cross multiply
    126,375.61x = 189,510.71 × 51,444.89
  4. Step 4: Simplify right side
    126,375.61x = 9,749,357,372.55
  5. Step 5: Solve for x
    x = 9,749,357,372.55/126,375.61
  6. Step 6: Final answer
    x = 77,145.88

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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.