Home / 127,511.24-191,091.90-80,680.28

Finding the Fourth Proportional to 127,511.24, 191,091.90 and 80,680.28

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Solution

The fourth proportional to 127,511.24, 191,091.90 and 80,680.28 is: 120,909.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,511.24 : 191,091.90 = 80,680.28 : x
  2. Step 2: Convert to fraction form
    127,511.24/191,091.90 = 80,680.28/x
  3. Step 3: Cross multiply
    127,511.24x = 191,091.90 × 80,680.28
  4. Step 4: Simplify right side
    127,511.24x = 15,417,347,997.73
  5. Step 5: Solve for x
    x = 15,417,347,997.73/127,511.24
  6. Step 6: Final answer
    x = 120,909.72

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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.