Home / 199,042.20-298,563.30-120,115.80

Finding the Fourth Proportional to 199,042.20, 298,563.30 and 120,115.80

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Solution

The fourth proportional to 199,042.20, 298,563.30 and 120,115.80 is: 180,173.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,042.20 : 298,563.30 = 120,115.80 : x
  2. Step 2: Convert to fraction form
    199,042.20/298,563.30 = 120,115.80/x
  3. Step 3: Cross multiply
    199,042.20x = 298,563.30 × 120,115.80
  4. Step 4: Simplify right side
    199,042.20x = 35,862,169,630.14
  5. Step 5: Solve for x
    x = 35,862,169,630.14/199,042.20
  6. Step 6: Final answer
    x = 180,173.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.