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Finding the Fourth Proportional to 206,809.56, 285,377.04 and 116,145

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Solution

The fourth proportional to 206,809.56, 285,377.04 and 116,145 is: 160,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,809.56 : 285,377.04 = 116,145 : x
  2. Step 2: Convert to fraction form
    206,809.56/285,377.04 = 116,145/x
  3. Step 3: Cross multiply
    206,809.56x = 285,377.04 × 116,145
  4. Step 4: Simplify right side
    206,809.56x = 33,145,116,310.80
  5. Step 5: Solve for x
    x = 33,145,116,310.80/206,809.56
  6. Step 6: Final answer
    x = 160,268.78

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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.