Home / 199,127.40-298,253.70-120,103.80

Finding the Fourth Proportional to 199,127.40, 298,253.70 and 120,103.80

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Solution

The fourth proportional to 199,127.40, 298,253.70 and 120,103.80 is: 179,891.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,127.40 : 298,253.70 = 120,103.80 : x
  2. Step 2: Convert to fraction form
    199,127.40/298,253.70 = 120,103.80/x
  3. Step 3: Cross multiply
    199,127.40x = 298,253.70 × 120,103.80
  4. Step 4: Simplify right side
    199,127.40x = 35,821,402,734.06
  5. Step 5: Solve for x
    x = 35,821,402,734.06/199,127.40
  6. Step 6: Final answer
    x = 179,891.88

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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.