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Finding the Fourth Proportional to 139,555.14, 192,584.28 and 75,891.57

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Solution

The fourth proportional to 139,555.14, 192,584.28 and 75,891.57 is: 104,729.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,555.14 : 192,584.28 = 75,891.57 : x
  2. Step 2: Convert to fraction form
    139,555.14/192,584.28 = 75,891.57/x
  3. Step 3: Cross multiply
    139,555.14x = 192,584.28 × 75,891.57
  4. Step 4: Simplify right side
    139,555.14x = 14,615,523,366.52
  5. Step 5: Solve for x
    x = 14,615,523,366.52/139,555.14
  6. Step 6: Final answer
    x = 104,729.38

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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.