Home / 198,853.69-274,418.13-109,429.69

Finding the Fourth Proportional to 198,853.69, 274,418.13 and 109,429.69

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Solution

The fourth proportional to 198,853.69, 274,418.13 and 109,429.69 is: 151,012.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,853.69 : 274,418.13 = 109,429.69 : x
  2. Step 2: Convert to fraction form
    198,853.69/274,418.13 = 109,429.69/x
  3. Step 3: Cross multiply
    198,853.69x = 274,418.13 × 109,429.69
  4. Step 4: Simplify right side
    198,853.69x = 30,029,490,620.60
  5. Step 5: Solve for x
    x = 30,029,490,620.60/198,853.69
  6. Step 6: Final answer
    x = 151,012.99

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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.