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Finding the Fourth Proportional to 194,687.66, 268,668.43 and 108,645.73

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Solution

The fourth proportional to 194,687.66, 268,668.43 and 108,645.73 is: 149,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,687.66 : 268,668.43 = 108,645.73 : x
  2. Step 2: Convert to fraction form
    194,687.66/268,668.43 = 108,645.73/x
  3. Step 3: Cross multiply
    194,687.66x = 268,668.43 × 108,645.73
  4. Step 4: Simplify right side
    194,687.66x = 29,189,676,762.02
  5. Step 5: Solve for x
    x = 29,189,676,762.02/194,687.66
  6. Step 6: Final answer
    x = 149,930.80

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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.