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Finding the Fourth Proportional to 194,687.40, 268,668.08 and 108,645.46

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Solution

The fourth proportional to 194,687.40, 268,668.08 and 108,645.46 is: 149,930.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,687.40 : 268,668.08 = 108,645.46 : x
  2. Step 2: Convert to fraction form
    194,687.40/268,668.08 = 108,645.46/x
  3. Step 3: Cross multiply
    194,687.40x = 268,668.08 × 108,645.46
  4. Step 4: Simplify right side
    194,687.40x = 29,189,567,138.92
  5. Step 5: Solve for x
    x = 29,189,567,138.92/194,687.40
  6. Step 6: Final answer
    x = 149,930.44

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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.