Home / 126,348.12-189,358.20-51,381

Finding the Fourth Proportional to 126,348.12, 189,358.20 and 51,381

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Solution

The fourth proportional to 126,348.12, 189,358.20 and 51,381 is: 77,004.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,348.12 : 189,358.20 = 51,381 : x
  2. Step 2: Convert to fraction form
    126,348.12/189,358.20 = 51,381/x
  3. Step 3: Cross multiply
    126,348.12x = 189,358.20 × 51,381
  4. Step 4: Simplify right side
    126,348.12x = 9,729,413,674.20
  5. Step 5: Solve for x
    x = 9,729,413,674.20/126,348.12
  6. Step 6: Final answer
    x = 77,004.82

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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.