Home / 126,620.91-189,861.25-51,793.60

Finding the Fourth Proportional to 126,620.91, 189,861.25 and 51,793.60

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Solution

The fourth proportional to 126,620.91, 189,861.25 and 51,793.60 is: 77,661.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,620.91 : 189,861.25 = 51,793.60 : x
  2. Step 2: Convert to fraction form
    126,620.91/189,861.25 = 51,793.60/x
  3. Step 3: Cross multiply
    126,620.91x = 189,861.25 × 51,793.60
  4. Step 4: Simplify right side
    126,620.91x = 9,833,597,379.03
  5. Step 5: Solve for x
    x = 9,833,597,379.03/126,620.91
  6. Step 6: Final answer
    x = 77,661.72

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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.