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Finding the Fourth Proportional to 159,383.76, 219,951.03 and 87,766.32

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Solution

The fourth proportional to 159,383.76, 219,951.03 and 87,766.32 is: 121,118.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,383.76 : 219,951.03 = 87,766.32 : x
  2. Step 2: Convert to fraction form
    159,383.76/219,951.03 = 87,766.32/x
  3. Step 3: Cross multiply
    159,383.76x = 219,951.03 × 87,766.32
  4. Step 4: Simplify right side
    159,383.76x = 19,304,292,483.31
  5. Step 5: Solve for x
    x = 19,304,292,483.31/159,383.76
  6. Step 6: Final answer
    x = 121,118.32

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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.