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Finding the Fourth Proportional to 159,383.93, 219,951.32 and 87,766.56

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Solution

The fourth proportional to 159,383.93, 219,951.32 and 87,766.56 is: 121,118.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,383.93 : 219,951.32 = 87,766.56 : x
  2. Step 2: Convert to fraction form
    159,383.93/219,951.32 = 87,766.56/x
  3. Step 3: Cross multiply
    159,383.93x = 219,951.32 × 87,766.56
  4. Step 4: Simplify right side
    159,383.93x = 19,304,370,285.03
  5. Step 5: Solve for x
    x = 19,304,370,285.03/159,383.93
  6. Step 6: Final answer
    x = 121,118.68

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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.