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Finding the Fourth Proportional to 132,174.72, 198,240.48 and 43,424.64

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Solution

The fourth proportional to 132,174.72, 198,240.48 and 43,424.64 is: 65,129.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,174.72 : 198,240.48 = 43,424.64 : x
  2. Step 2: Convert to fraction form
    132,174.72/198,240.48 = 43,424.64/x
  3. Step 3: Cross multiply
    132,174.72x = 198,240.48 × 43,424.64
  4. Step 4: Simplify right side
    132,174.72x = 8,608,521,477.43
  5. Step 5: Solve for x
    x = 8,608,521,477.43/132,174.72
  6. Step 6: Final answer
    x = 65,129.86

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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.