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Finding the Fourth Proportional to 128,025.32, 192,067.86 and 43,786.14

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Solution

The fourth proportional to 128,025.32, 192,067.86 and 43,786.14 is: 65,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,025.32 : 192,067.86 = 43,786.14 : x
  2. Step 2: Convert to fraction form
    128,025.32/192,067.86 = 43,786.14/x
  3. Step 3: Cross multiply
    128,025.32x = 192,067.86 × 43,786.14
  4. Step 4: Simplify right side
    128,025.32x = 8,409,910,207.46
  5. Step 5: Solve for x
    x = 8,409,910,207.46/128,025.32
  6. Step 6: Final answer
    x = 65,689.43

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1.5x scale

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.