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Finding the Fourth Proportional to 111,808.91, 167,791.11 and 72,267.95

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Solution

The fourth proportional to 111,808.91, 167,791.11 and 72,267.95 is: 108,452.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,808.91 : 167,791.11 = 72,267.95 : x
  2. Step 2: Convert to fraction form
    111,808.91/167,791.11 = 72,267.95/x
  3. Step 3: Cross multiply
    111,808.91x = 167,791.11 × 72,267.95
  4. Step 4: Simplify right side
    111,808.91x = 12,125,918,708.97
  5. Step 5: Solve for x
    x = 12,125,918,708.97/111,808.91
  6. Step 6: Final answer
    x = 108,452.17

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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.