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Finding the Fourth Proportional to 111,230.15, 166,843.81 and 26,991

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Solution

The fourth proportional to 111,230.15, 166,843.81 and 26,991 is: 40,486.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,230.15 : 166,843.81 = 26,991 : x
  2. Step 2: Convert to fraction form
    111,230.15/166,843.81 = 26,991/x
  3. Step 3: Cross multiply
    111,230.15x = 166,843.81 × 26,991
  4. Step 4: Simplify right side
    111,230.15x = 4,503,281,309.45
  5. Step 5: Solve for x
    x = 4,503,281,309.45/111,230.15
  6. Step 6: Final answer
    x = 40,486.16

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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.