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Finding the Fourth Proportional to 139,637.88, 192,694.55 and 75,975.71

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Solution

The fourth proportional to 139,637.88, 192,694.55 and 75,975.71 is: 104,843.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,637.88 : 192,694.55 = 75,975.71 : x
  2. Step 2: Convert to fraction form
    139,637.88/192,694.55 = 75,975.71/x
  3. Step 3: Cross multiply
    139,637.88x = 192,694.55 × 75,975.71
  4. Step 4: Simplify right side
    139,637.88x = 14,640,103,906.03
  5. Step 5: Solve for x
    x = 14,640,103,906.03/139,637.88
  6. Step 6: Final answer
    x = 104,843.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.