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Finding the Fourth Proportional to 111,071.97, 166,557.87 and 54,890.19

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Solution

The fourth proportional to 111,071.97, 166,557.87 and 54,890.19 is: 82,310.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,071.97 : 166,557.87 = 54,890.19 : x
  2. Step 2: Convert to fraction form
    111,071.97/166,557.87 = 54,890.19/x
  3. Step 3: Cross multiply
    111,071.97x = 166,557.87 × 54,890.19
  4. Step 4: Simplify right side
    111,071.97x = 9,142,393,130.30
  5. Step 5: Solve for x
    x = 9,142,393,130.30/111,071.97
  6. Step 6: Final answer
    x = 82,310.53

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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.