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Finding the Fourth Proportional to 111,322.98, 166,590.30 and 69,222.89

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Solution

The fourth proportional to 111,322.98, 166,590.30 and 69,222.89 is: 103,589.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,322.98 : 166,590.30 = 69,222.89 : x
  2. Step 2: Convert to fraction form
    111,322.98/166,590.30 = 69,222.89/x
  3. Step 3: Cross multiply
    111,322.98x = 166,590.30 × 69,222.89
  4. Step 4: Simplify right side
    111,322.98x = 11,531,862,011.97
  5. Step 5: Solve for x
    x = 11,531,862,011.97/111,322.98
  6. Step 6: Final answer
    x = 103,589.23

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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.