Home / 198,710.82-274,079.94-122,129.37

Finding the Fourth Proportional to 198,710.82, 274,079.94 and 122,129.37

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Solution

The fourth proportional to 198,710.82, 274,079.94 and 122,129.37 is: 168,451.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,710.82 : 274,079.94 = 122,129.37 : x
  2. Step 2: Convert to fraction form
    198,710.82/274,079.94 = 122,129.37/x
  3. Step 3: Cross multiply
    198,710.82x = 274,079.94 × 122,129.37
  4. Step 4: Simplify right side
    198,710.82x = 33,473,210,401.84
  5. Step 5: Solve for x
    x = 33,473,210,401.84/198,710.82
  6. Step 6: Final answer
    x = 168,451.88

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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.