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Finding the Fourth Proportional to 203,665.92, 281,046.27 and 123,045.81

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Solution

The fourth proportional to 203,665.92, 281,046.27 and 123,045.81 is: 169,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,665.92 : 281,046.27 = 123,045.81 : x
  2. Step 2: Convert to fraction form
    203,665.92/281,046.27 = 123,045.81/x
  3. Step 3: Cross multiply
    203,665.92x = 281,046.27 × 123,045.81
  4. Step 4: Simplify right side
    203,665.92x = 34,581,565,939.63
  5. Step 5: Solve for x
    x = 34,581,565,939.63/203,665.92
  6. Step 6: Final answer
    x = 169,795.55

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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.