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Finding the Fourth Proportional to 115,616.40, 173,381.40 and 45,481.20

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Solution

The fourth proportional to 115,616.40, 173,381.40 and 45,481.20 is: 68,204.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,616.40 : 173,381.40 = 45,481.20 : x
  2. Step 2: Convert to fraction form
    115,616.40/173,381.40 = 45,481.20/x
  3. Step 3: Cross multiply
    115,616.40x = 173,381.40 × 45,481.20
  4. Step 4: Simplify right side
    115,616.40x = 7,885,594,129.68
  5. Step 5: Solve for x
    x = 7,885,594,129.68/115,616.40
  6. Step 6: Final answer
    x = 68,204.81

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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.