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Finding the Fourth Proportional to 198,630.77, 274,115.87 and 107,992.83

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Solution

The fourth proportional to 198,630.77, 274,115.87 and 107,992.83 is: 149,033.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,630.77 : 274,115.87 = 107,992.83 : x
  2. Step 2: Convert to fraction form
    198,630.77/274,115.87 = 107,992.83/x
  3. Step 3: Cross multiply
    198,630.77x = 274,115.87 × 107,992.83
  4. Step 4: Simplify right side
    198,630.77x = 29,602,548,009.25
  5. Step 5: Solve for x
    x = 29,602,548,009.25/198,630.77
  6. Step 6: Final answer
    x = 149,033.05

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1.5x scale

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.