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Finding the Fourth Proportional to 128,339.42, 192,494.41 and 33,578.75

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Solution

The fourth proportional to 128,339.42, 192,494.41 and 33,578.75 is: 50,364.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,339.42 : 192,494.41 = 33,578.75 : x
  2. Step 2: Convert to fraction form
    128,339.42/192,494.41 = 33,578.75/x
  3. Step 3: Cross multiply
    128,339.42x = 192,494.41 × 33,578.75
  4. Step 4: Simplify right side
    128,339.42x = 6,463,721,669.79
  5. Step 5: Solve for x
    x = 6,463,721,669.79/128,339.42
  6. Step 6: Final answer
    x = 50,364.27

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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.