Home / 198,858.80-298,287.96-136,339.76

Finding the Fourth Proportional to 198,858.80, 298,287.96 and 136,339.76

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Solution

The fourth proportional to 198,858.80, 298,287.96 and 136,339.76 is: 204,509.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,858.80 : 298,287.96 = 136,339.76 : x
  2. Step 2: Convert to fraction form
    198,858.80/298,287.96 = 136,339.76/x
  3. Step 3: Cross multiply
    198,858.80x = 298,287.96 × 136,339.76
  4. Step 4: Simplify right side
    198,858.80x = 40,668,508,877.29
  5. Step 5: Solve for x
    x = 40,668,508,877.29/198,858.80
  6. Step 6: Final answer
    x = 204,509.48

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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.