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Finding the Fourth Proportional to 103,203.39, 154,805.22 and 28,324.56

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Solution

The fourth proportional to 103,203.39, 154,805.22 and 28,324.56 is: 42,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,203.39 : 154,805.22 = 28,324.56 : x
  2. Step 2: Convert to fraction form
    103,203.39/154,805.22 = 28,324.56/x
  3. Step 3: Cross multiply
    103,203.39x = 154,805.22 × 28,324.56
  4. Step 4: Simplify right side
    103,203.39x = 4,384,789,742.20
  5. Step 5: Solve for x
    x = 4,384,789,742.20/103,203.39
  6. Step 6: Final answer
    x = 42,486.88

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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.