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Finding the Fourth Proportional to 106,815, 160,249.86 and 40,255.68

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Solution

The fourth proportional to 106,815, 160,249.86 and 40,255.68 is: 60,393.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,815 : 160,249.86 = 40,255.68 : x
  2. Step 2: Convert to fraction form
    106,815/160,249.86 = 40,255.68/x
  3. Step 3: Cross multiply
    106,815x = 160,249.86 × 40,255.68
  4. Step 4: Simplify right side
    106,815x = 6,450,967,084.20
  5. Step 5: Solve for x
    x = 6,450,967,084.20/106,815
  6. Step 6: Final answer
    x = 60,393.83

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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.