Home / 159,129.48-219,604.32-87,515.04

Finding the Fourth Proportional to 159,129.48, 219,604.32 and 87,515.04

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Solution

The fourth proportional to 159,129.48, 219,604.32 and 87,515.04 is: 120,773.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,129.48 : 219,604.32 = 87,515.04 : x
  2. Step 2: Convert to fraction form
    159,129.48/219,604.32 = 87,515.04/x
  3. Step 3: Cross multiply
    159,129.48x = 219,604.32 × 87,515.04
  4. Step 4: Simplify right side
    159,129.48x = 19,218,680,848.97
  5. Step 5: Solve for x
    x = 19,218,680,848.97/159,129.48
  6. Step 6: Final answer
    x = 120,773.86

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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.