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Finding the Fourth Proportional to 111,268.58, 166,857.91 and 69,086.21

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Solution

The fourth proportional to 111,268.58, 166,857.91 and 69,086.21 is: 103,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,268.58 : 166,857.91 = 69,086.21 : x
  2. Step 2: Convert to fraction form
    111,268.58/166,857.91 = 69,086.21/x
  3. Step 3: Cross multiply
    111,268.58x = 166,857.91 × 69,086.21
  4. Step 4: Simplify right side
    111,268.58x = 11,527,579,603.42
  5. Step 5: Solve for x
    x = 11,527,579,603.42/111,268.58
  6. Step 6: Final answer
    x = 103,601.40

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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.