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Finding the Fourth Proportional to 128,067.78, 192,052.40 and 88,504.94

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Solution

The fourth proportional to 128,067.78, 192,052.40 and 88,504.94 is: 132,723.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,067.78 : 192,052.40 = 88,504.94 : x
  2. Step 2: Convert to fraction form
    128,067.78/192,052.40 = 88,504.94/x
  3. Step 3: Cross multiply
    128,067.78x = 192,052.40 × 88,504.94
  4. Step 4: Simplify right side
    128,067.78x = 16,997,586,138.86
  5. Step 5: Solve for x
    x = 16,997,586,138.86/128,067.78
  6. Step 6: Final answer
    x = 132,723.36

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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.