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Finding the Fourth Proportional to 192,647.03, 289,019.75 and 74,286.59

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Solution

The fourth proportional to 192,647.03, 289,019.75 and 74,286.59 is: 111,448.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,647.03 : 289,019.75 = 74,286.59 : x
  2. Step 2: Convert to fraction form
    192,647.03/289,019.75 = 74,286.59/x
  3. Step 3: Cross multiply
    192,647.03x = 289,019.75 × 74,286.59
  4. Step 4: Simplify right side
    192,647.03x = 21,470,289,853.62
  5. Step 5: Solve for x
    x = 21,470,289,853.62/192,647.03
  6. Step 6: Final answer
    x = 111,448.85

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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.