Home / 127,708.85-191,366.35-80,863.31

Finding the Fourth Proportional to 127,708.85, 191,366.35 and 80,863.31

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Solution

The fourth proportional to 127,708.85, 191,366.35 and 80,863.31 is: 121,170.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,708.85 : 191,366.35 = 80,863.31 : x
  2. Step 2: Convert to fraction form
    127,708.85/191,366.35 = 80,863.31/x
  3. Step 3: Cross multiply
    127,708.85x = 191,366.35 × 80,863.31
  4. Step 4: Simplify right side
    127,708.85x = 15,474,516,759.88
  5. Step 5: Solve for x
    x = 15,474,516,759.88/127,708.85
  6. Step 6: Final answer
    x = 121,170.27

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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.