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Finding the Fourth Proportional to 139,206.75, 192,105.45 and 75,544.56

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Solution

The fourth proportional to 139,206.75, 192,105.45 and 75,544.56 is: 104,251.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,206.75 : 192,105.45 = 75,544.56 : x
  2. Step 2: Convert to fraction form
    139,206.75/192,105.45 = 75,544.56/x
  3. Step 3: Cross multiply
    139,206.75x = 192,105.45 × 75,544.56
  4. Step 4: Simplify right side
    139,206.75x = 14,512,521,693.85
  5. Step 5: Solve for x
    x = 14,512,521,693.85/139,206.75
  6. Step 6: Final answer
    x = 104,251.57

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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.