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Finding the Fourth Proportional to 218,107.55, 327,161.37 and 68,347.81

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Solution

The fourth proportional to 218,107.55, 327,161.37 and 68,347.81 is: 102,521.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,107.55 : 327,161.37 = 68,347.81 : x
  2. Step 2: Convert to fraction form
    218,107.55/327,161.37 = 68,347.81/x
  3. Step 3: Cross multiply
    218,107.55x = 327,161.37 × 68,347.81
  4. Step 4: Simplify right side
    218,107.55x = 22,360,763,156.10
  5. Step 5: Solve for x
    x = 22,360,763,156.10/218,107.55
  6. Step 6: Final answer
    x = 102,521.73

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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.