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Finding the Fourth Proportional to 198,628.98, 274,104.72 and 107,987.20

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Solution

The fourth proportional to 198,628.98, 274,104.72 and 107,987.20 is: 149,020.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,628.98 : 274,104.72 = 107,987.20 : x
  2. Step 2: Convert to fraction form
    198,628.98/274,104.72 = 107,987.20/x
  3. Step 3: Cross multiply
    198,628.98x = 274,104.72 × 107,987.20
  4. Step 4: Simplify right side
    198,628.98x = 29,599,801,219.58
  5. Step 5: Solve for x
    x = 29,599,801,219.58/198,628.98
  6. Step 6: Final answer
    x = 149,020.56

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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.