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Finding the Fourth Proportional to 132,480.64, 198,745.28 and 43,740.16

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Solution

The fourth proportional to 132,480.64, 198,745.28 and 43,740.16 is: 65,618.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,480.64 : 198,745.28 = 43,740.16 : x
  2. Step 2: Convert to fraction form
    132,480.64/198,745.28 = 43,740.16/x
  3. Step 3: Cross multiply
    132,480.64x = 198,745.28 × 43,740.16
  4. Step 4: Simplify right side
    132,480.64x = 8,693,150,346.44
  5. Step 5: Solve for x
    x = 8,693,150,346.44/132,480.64
  6. Step 6: Final answer
    x = 65,618.27

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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.