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Finding the Fourth Proportional to 111,974.82, 167,879.88 and 52,778.40

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Solution

The fourth proportional to 111,974.82, 167,879.88 and 52,778.40 is: 79,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,974.82 : 167,879.88 = 52,778.40 : x
  2. Step 2: Convert to fraction form
    111,974.82/167,879.88 = 52,778.40/x
  3. Step 3: Cross multiply
    111,974.82x = 167,879.88 × 52,778.40
  4. Step 4: Simplify right side
    111,974.82x = 8,860,431,458.59
  5. Step 5: Solve for x
    x = 8,860,431,458.59/111,974.82
  6. Step 6: Final answer
    x = 79,128.79

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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.