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Finding the Fourth Proportional to 103,129.43, 154,694.26 and 28,250.22

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Solution

The fourth proportional to 103,129.43, 154,694.26 and 28,250.22 is: 42,375.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,129.43 : 154,694.26 = 28,250.22 : x
  2. Step 2: Convert to fraction form
    103,129.43/154,694.26 = 28,250.22/x
  3. Step 3: Cross multiply
    103,129.43x = 154,694.26 × 28,250.22
  4. Step 4: Simplify right side
    103,129.43x = 4,370,146,104.27
  5. Step 5: Solve for x
    x = 4,370,146,104.27/103,129.43
  6. Step 6: Final answer
    x = 42,375.36

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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.