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Finding the Fourth Proportional to 128,067.93, 192,099.20 and 42,684.97

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Solution

The fourth proportional to 128,067.93, 192,099.20 and 42,684.97 is: 64,026.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,067.93 : 192,099.20 = 42,684.97 : x
  2. Step 2: Convert to fraction form
    128,067.93/192,099.20 = 42,684.97/x
  3. Step 3: Cross multiply
    128,067.93x = 192,099.20 × 42,684.97
  4. Step 4: Simplify right side
    128,067.93x = 8,199,747,415.10
  5. Step 5: Solve for x
    x = 8,199,747,415.10/128,067.93
  6. Step 6: Final answer
    x = 64,026.55

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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.