Home / 111,828.20-167,450.70-72,170.60

Finding the Fourth Proportional to 111,828.20, 167,450.70 and 72,170.60

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Solution

The fourth proportional to 111,828.20, 167,450.70 and 72,170.60 is: 108,067.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,828.20 : 167,450.70 = 72,170.60 : x
  2. Step 2: Convert to fraction form
    111,828.20/167,450.70 = 72,170.60/x
  3. Step 3: Cross multiply
    111,828.20x = 167,450.70 × 72,170.60
  4. Step 4: Simplify right side
    111,828.20x = 12,085,017,489.42
  5. Step 5: Solve for x
    x = 12,085,017,489.42/111,828.20
  6. Step 6: Final answer
    x = 108,067.71

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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.