Home / 104,081.31-156,121.74-80,423.25

Finding the Fourth Proportional to 104,081.31, 156,121.74 and 80,423.25

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Solution

The fourth proportional to 104,081.31, 156,121.74 and 80,423.25 is: 120,634.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,081.31 : 156,121.74 = 80,423.25 : x
  2. Step 2: Convert to fraction form
    104,081.31/156,121.74 = 80,423.25/x
  3. Step 3: Cross multiply
    104,081.31x = 156,121.74 × 80,423.25
  4. Step 4: Simplify right side
    104,081.31x = 12,555,817,726.46
  5. Step 5: Solve for x
    x = 12,555,817,726.46/104,081.31
  6. Step 6: Final answer
    x = 120,634.70

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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.