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Finding the Fourth Proportional to 132,157.56, 198,130.62 and 68,945.96

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Solution

The fourth proportional to 132,157.56, 198,130.62 and 68,945.96 is: 103,363.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,157.56 : 198,130.62 = 68,945.96 : x
  2. Step 2: Convert to fraction form
    132,157.56/198,130.62 = 68,945.96/x
  3. Step 3: Cross multiply
    132,157.56x = 198,130.62 × 68,945.96
  4. Step 4: Simplify right side
    132,157.56x = 13,660,305,801.30
  5. Step 5: Solve for x
    x = 13,660,305,801.30/132,157.56
  6. Step 6: Final answer
    x = 103,363.79

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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.