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Finding the Fourth Proportional to 199,603.12, 275,452.98 and 108,961.08

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Solution

The fourth proportional to 199,603.12, 275,452.98 and 108,961.08 is: 150,366.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,603.12 : 275,452.98 = 108,961.08 : x
  2. Step 2: Convert to fraction form
    199,603.12/275,452.98 = 108,961.08/x
  3. Step 3: Cross multiply
    199,603.12x = 275,452.98 × 108,961.08
  4. Step 4: Simplify right side
    199,603.12x = 30,013,654,190.02
  5. Step 5: Solve for x
    x = 30,013,654,190.02/199,603.12
  6. Step 6: Final answer
    x = 150,366.66

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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.