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Finding the Fourth Proportional to 170,067.20, 255,100.80 and 149,331.20

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Solution

The fourth proportional to 170,067.20, 255,100.80 and 149,331.20 is: 223,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,067.20 : 255,100.80 = 149,331.20 : x
  2. Step 2: Convert to fraction form
    170,067.20/255,100.80 = 149,331.20/x
  3. Step 3: Cross multiply
    170,067.20x = 255,100.80 × 149,331.20
  4. Step 4: Simplify right side
    170,067.20x = 38,094,508,584.96
  5. Step 5: Solve for x
    x = 38,094,508,584.96/170,067.20
  6. Step 6: Final answer
    x = 223,996.80

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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.