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Finding the Fourth Proportional to 198,673.74, 274,165.88 and 108,028.91

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Solution

The fourth proportional to 198,673.74, 274,165.88 and 108,028.91 is: 149,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,673.74 : 274,165.88 = 108,028.91 : x
  2. Step 2: Convert to fraction form
    198,673.74/274,165.88 = 108,028.91/x
  3. Step 3: Cross multiply
    198,673.74x = 274,165.88 × 108,028.91
  4. Step 4: Simplify right side
    198,673.74x = 29,617,840,905.52
  5. Step 5: Solve for x
    x = 29,617,840,905.52/198,673.74
  6. Step 6: Final answer
    x = 149,077.79

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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.