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Finding the Fourth Proportional to 132,390.56, 198,727.32 and 53,556.32

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Solution

The fourth proportional to 132,390.56, 198,727.32 and 53,556.32 is: 80,391.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,390.56 : 198,727.32 = 53,556.32 : x
  2. Step 2: Convert to fraction form
    132,390.56/198,727.32 = 53,556.32/x
  3. Step 3: Cross multiply
    132,390.56x = 198,727.32 × 53,556.32
  4. Step 4: Simplify right side
    132,390.56x = 10,643,103,942.66
  5. Step 5: Solve for x
    x = 10,643,103,942.66/132,390.56
  6. Step 6: Final answer
    x = 80,391.71

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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.