Home / 115,640.73-173,376.99-78,107.76

Finding the Fourth Proportional to 115,640.73, 173,376.99 and 78,107.76

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Solution

The fourth proportional to 115,640.73, 173,376.99 and 78,107.76 is: 117,104.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,640.73 : 173,376.99 = 78,107.76 : x
  2. Step 2: Convert to fraction form
    115,640.73/173,376.99 = 78,107.76/x
  3. Step 3: Cross multiply
    115,640.73x = 173,376.99 × 78,107.76
  4. Step 4: Simplify right side
    115,640.73x = 13,542,088,324.44
  5. Step 5: Solve for x
    x = 13,542,088,324.44/115,640.73
  6. Step 6: Final answer
    x = 117,104.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.