Home / 127,556.30-191,334.45-80,861.90

Finding the Fourth Proportional to 127,556.30, 191,334.45 and 80,861.90

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Solution

The fourth proportional to 127,556.30, 191,334.45 and 80,861.90 is: 121,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,556.30 : 191,334.45 = 80,861.90 : x
  2. Step 2: Convert to fraction form
    127,556.30/191,334.45 = 80,861.90/x
  3. Step 3: Cross multiply
    127,556.30x = 191,334.45 × 80,861.90
  4. Step 4: Simplify right side
    127,556.30x = 15,471,667,162.46
  5. Step 5: Solve for x
    x = 15,471,667,162.46/127,556.30
  6. Step 6: Final answer
    x = 121,292.85

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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.