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Finding the Fourth Proportional to 127,708.92, 176,082.21 and 79,879.23

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Solution

The fourth proportional to 127,708.92, 176,082.21 and 79,879.23 is: 110,135.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,708.92 : 176,082.21 = 79,879.23 : x
  2. Step 2: Convert to fraction form
    127,708.92/176,082.21 = 79,879.23/x
  3. Step 3: Cross multiply
    127,708.92x = 176,082.21 × 79,879.23
  4. Step 4: Simplify right side
    127,708.92x = 14,065,311,351.50
  5. Step 5: Solve for x
    x = 14,065,311,351.50/127,708.92
  6. Step 6: Final answer
    x = 110,135.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.