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Finding the Fourth Proportional to 106,155, 159,231.78 and 27,269.28

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Solution

The fourth proportional to 106,155, 159,231.78 and 27,269.28 is: 40,903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,155 : 159,231.78 = 27,269.28 : x
  2. Step 2: Convert to fraction form
    106,155/159,231.78 = 27,269.28/x
  3. Step 3: Cross multiply
    106,155x = 159,231.78 × 27,269.28
  4. Step 4: Simplify right side
    106,155x = 4,342,135,993.72
  5. Step 5: Solve for x
    x = 4,342,135,993.72/106,155
  6. Step 6: Final answer
    x = 40,903.74

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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.