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Finding the Fourth Proportional to 198,603.39, 274,078.01 and 107,965.44

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Solution

The fourth proportional to 198,603.39, 274,078.01 and 107,965.44 is: 148,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,603.39 : 274,078.01 = 107,965.44 : x
  2. Step 2: Convert to fraction form
    198,603.39/274,078.01 = 107,965.44/x
  3. Step 3: Cross multiply
    198,603.39x = 274,078.01 × 107,965.44
  4. Step 4: Simplify right side
    198,603.39x = 29,590,953,213.89
  5. Step 5: Solve for x
    x = 29,590,953,213.89/198,603.39
  6. Step 6: Final answer
    x = 148,995.20

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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.