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Finding the Fourth Proportional to 159,101.75, 219,554.80 and 87,481.27

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Solution

The fourth proportional to 159,101.75, 219,554.80 and 87,481.27 is: 120,721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,101.75 : 219,554.80 = 87,481.27 : x
  2. Step 2: Convert to fraction form
    159,101.75/219,554.80 = 87,481.27/x
  3. Step 3: Cross multiply
    159,101.75x = 219,554.80 × 87,481.27
  4. Step 4: Simplify right side
    159,101.75x = 19,206,932,301.19
  5. Step 5: Solve for x
    x = 19,206,932,301.19/159,101.75
  6. Step 6: Final answer
    x = 120,721.06

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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.