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Finding the Fourth Proportional to 115,081.36, 158,791.08 and 64,769.68

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Solution

The fourth proportional to 115,081.36, 158,791.08 and 64,769.68 is: 89,370.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,081.36 : 158,791.08 = 64,769.68 : x
  2. Step 2: Convert to fraction form
    115,081.36/158,791.08 = 64,769.68/x
  3. Step 3: Cross multiply
    115,081.36x = 158,791.08 × 64,769.68
  4. Step 4: Simplify right side
    115,081.36x = 10,284,847,438.45
  5. Step 5: Solve for x
    x = 10,284,847,438.45/115,081.36
  6. Step 6: Final answer
    x = 89,370.23

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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.