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Finding the Fourth Proportional to 199,813.88, 275,735 and 109,173

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Solution

The fourth proportional to 199,813.88, 275,735 and 109,173 is: 150,654.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,813.88 : 275,735 = 109,173 : x
  2. Step 2: Convert to fraction form
    199,813.88/275,735 = 109,173/x
  3. Step 3: Cross multiply
    199,813.88x = 275,735 × 109,173
  4. Step 4: Simplify right side
    199,813.88x = 30,102,817,155
  5. Step 5: Solve for x
    x = 30,102,817,155/199,813.88
  6. Step 6: Final answer
    x = 150,654.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.