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Finding the Fourth Proportional to 111,540.80, 167,311.20 and 101,691.20

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Solution

The fourth proportional to 111,540.80, 167,311.20 and 101,691.20 is: 152,536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,540.80 : 167,311.20 = 101,691.20 : x
  2. Step 2: Convert to fraction form
    111,540.80/167,311.20 = 101,691.20/x
  3. Step 3: Cross multiply
    111,540.80x = 167,311.20 × 101,691.20
  4. Step 4: Simplify right side
    111,540.80x = 17,014,076,701.44
  5. Step 5: Solve for x
    x = 17,014,076,701.44/111,540.80
  6. Step 6: Final answer
    x = 152,536.80

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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.