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Finding the Fourth Proportional to 115,379.44, 159,229.09 and 65,078.44

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Solution

The fourth proportional to 115,379.44, 159,229.09 and 65,078.44 is: 89,811.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,379.44 : 159,229.09 = 65,078.44 : x
  2. Step 2: Convert to fraction form
    115,379.44/159,229.09 = 65,078.44/x
  3. Step 3: Cross multiply
    115,379.44x = 159,229.09 × 65,078.44
  4. Step 4: Simplify right side
    115,379.44x = 10,362,380,463.09
  5. Step 5: Solve for x
    x = 10,362,380,463.09/115,379.44
  6. Step 6: Final answer
    x = 89,811.33

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1.5x scale

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.