Home / 126,321.12-189,489.78-51,400.37

Finding the Fourth Proportional to 126,321.12, 189,489.78 and 51,400.37

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Solution

The fourth proportional to 126,321.12, 189,489.78 and 51,400.37 is: 77,103.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,321.12 : 189,489.78 = 51,400.37 : x
  2. Step 2: Convert to fraction form
    126,321.12/189,489.78 = 51,400.37/x
  3. Step 3: Cross multiply
    126,321.12x = 189,489.78 × 51,400.37
  4. Step 4: Simplify right side
    126,321.12x = 9,739,845,276.94
  5. Step 5: Solve for x
    x = 9,739,845,276.94/126,321.12
  6. Step 6: Final answer
    x = 77,103.85

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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.