Home / 111,292.20-167,067.90-72,012.60

Finding the Fourth Proportional to 111,292.20, 167,067.90 and 72,012.60

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Solution

The fourth proportional to 111,292.20, 167,067.90 and 72,012.60 is: 108,102.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,292.20 : 167,067.90 = 72,012.60 : x
  2. Step 2: Convert to fraction form
    111,292.20/167,067.90 = 72,012.60/x
  3. Step 3: Cross multiply
    111,292.20x = 167,067.90 × 72,012.60
  4. Step 4: Simplify right side
    111,292.20x = 12,030,993,855.54
  5. Step 5: Solve for x
    x = 12,030,993,855.54/111,292.20
  6. Step 6: Final answer
    x = 108,102.76

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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.