Home / 127,385.10-191,078.33-38,638.69

Finding the Fourth Proportional to 127,385.10, 191,078.33 and 38,638.69

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Solution

The fourth proportional to 127,385.10, 191,078.33 and 38,638.69 is: 57,958.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,385.10 : 191,078.33 = 38,638.69 : x
  2. Step 2: Convert to fraction form
    127,385.10/191,078.33 = 38,638.69/x
  3. Step 3: Cross multiply
    127,385.10x = 191,078.33 × 38,638.69
  4. Step 4: Simplify right side
    127,385.10x = 7,383,015,687.70
  5. Step 5: Solve for x
    x = 7,383,015,687.70/127,385.10
  6. Step 6: Final answer
    x = 57,958.24

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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.