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Finding the Fourth Proportional to 198,703.38, 274,215.81 and 108,064.98

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Solution

The fourth proportional to 198,703.38, 274,215.81 and 108,064.98 is: 149,132.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,703.38 : 274,215.81 = 108,064.98 : x
  2. Step 2: Convert to fraction form
    198,703.38/274,215.81 = 108,064.98/x
  3. Step 3: Cross multiply
    198,703.38x = 274,215.81 × 108,064.98
  4. Step 4: Simplify right side
    198,703.38x = 29,633,126,023.33
  5. Step 5: Solve for x
    x = 29,633,126,023.33/198,703.38
  6. Step 6: Final answer
    x = 149,132.47

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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.