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Finding the Fourth Proportional to 103,372.82, 154,757.97 and 76,836.34

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Solution

The fourth proportional to 103,372.82, 154,757.97 and 76,836.34 is: 115,030.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,372.82 : 154,757.97 = 76,836.34 : x
  2. Step 2: Convert to fraction form
    103,372.82/154,757.97 = 76,836.34/x
  3. Step 3: Cross multiply
    103,372.82x = 154,757.97 × 76,836.34
  4. Step 4: Simplify right side
    103,372.82x = 11,891,035,613.73
  5. Step 5: Solve for x
    x = 11,891,035,613.73/103,372.82
  6. Step 6: Final answer
    x = 115,030.59

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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.