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Finding the Fourth Proportional to 181,212.60, 271,721.70 and 75,912.60

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Solution

The fourth proportional to 181,212.60, 271,721.70 and 75,912.60 is: 113,828.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,212.60 : 271,721.70 = 75,912.60 : x
  2. Step 2: Convert to fraction form
    181,212.60/271,721.70 = 75,912.60/x
  3. Step 3: Cross multiply
    181,212.60x = 271,721.70 × 75,912.60
  4. Step 4: Simplify right side
    181,212.60x = 20,627,100,723.42
  5. Step 5: Solve for x
    x = 20,627,100,723.42/181,212.60
  6. Step 6: Final answer
    x = 113,828.18

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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.