Home / 167,421.28-231,085.20-103,722.88

Finding the Fourth Proportional to 167,421.28, 231,085.20 and 103,722.88

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Solution

The fourth proportional to 167,421.28, 231,085.20 and 103,722.88 is: 143,164.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,421.28 : 231,085.20 = 103,722.88 : x
  2. Step 2: Convert to fraction form
    167,421.28/231,085.20 = 103,722.88/x
  3. Step 3: Cross multiply
    167,421.28x = 231,085.20 × 103,722.88
  4. Step 4: Simplify right side
    167,421.28x = 23,968,822,469.38
  5. Step 5: Solve for x
    x = 23,968,822,469.38/167,421.28
  6. Step 6: Final answer
    x = 143,164.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.