Home / 159,102.21-219,555.37-87,481.61

Finding the Fourth Proportional to 159,102.21, 219,555.37 and 87,481.61

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Solution

The fourth proportional to 159,102.21, 219,555.37 and 87,481.61 is: 120,721.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,102.21 : 219,555.37 = 87,481.61 : x
  2. Step 2: Convert to fraction form
    159,102.21/219,555.37 = 87,481.61/x
  3. Step 3: Cross multiply
    159,102.21x = 219,555.37 × 87,481.61
  4. Step 4: Simplify right side
    159,102.21x = 19,207,057,251.75
  5. Step 5: Solve for x
    x = 19,207,057,251.75/159,102.21
  6. Step 6: Final answer
    x = 120,721.50

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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.