Home / 78,170.38-117,267.90-25,567.54

Finding the Fourth Proportional to 78,170.38, 117,267.90 and 25,567.54

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Solution

The fourth proportional to 78,170.38, 117,267.90 and 25,567.54 is: 38,355.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,170.38 : 117,267.90 = 25,567.54 : x
  2. Step 2: Convert to fraction form
    78,170.38/117,267.90 = 25,567.54/x
  3. Step 3: Cross multiply
    78,170.38x = 117,267.90 × 25,567.54
  4. Step 4: Simplify right side
    78,170.38x = 2,998,251,723.97
  5. Step 5: Solve for x
    x = 2,998,251,723.97/78,170.38
  6. Step 6: Final answer
    x = 38,355.34

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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.