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Finding the Fourth Proportional to 139,206.54, 192,105.16 and 75,544.33

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Solution

The fourth proportional to 139,206.54, 192,105.16 and 75,544.33 is: 104,251.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,206.54 : 192,105.16 = 75,544.33 : x
  2. Step 2: Convert to fraction form
    139,206.54/192,105.16 = 75,544.33/x
  3. Step 3: Cross multiply
    139,206.54x = 192,105.16 × 75,544.33
  4. Step 4: Simplify right side
    139,206.54x = 14,512,455,601.74
  5. Step 5: Solve for x
    x = 14,512,455,601.74/139,206.54
  6. Step 6: Final answer
    x = 104,251.25

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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.