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Finding the Fourth Proportional to 119,855.97, 179,813.21 and 39,893.78

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Solution

The fourth proportional to 119,855.97, 179,813.21 and 39,893.78 is: 59,850.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,855.97 : 179,813.21 = 39,893.78 : x
  2. Step 2: Convert to fraction form
    119,855.97/179,813.21 = 39,893.78/x
  3. Step 3: Cross multiply
    119,855.97x = 179,813.21 × 39,893.78
  4. Step 4: Simplify right side
    119,855.97x = 7,173,428,890.90
  5. Step 5: Solve for x
    x = 7,173,428,890.90/119,855.97
  6. Step 6: Final answer
    x = 59,850.41

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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.