Home / 198,961.08-298,462.95-85,120.71

Finding the Fourth Proportional to 198,961.08, 298,462.95 and 85,120.71

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Solution

The fourth proportional to 198,961.08, 298,462.95 and 85,120.71 is: 127,690.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,961.08 : 298,462.95 = 85,120.71 : x
  2. Step 2: Convert to fraction form
    198,961.08/298,462.95 = 85,120.71/x
  3. Step 3: Cross multiply
    198,961.08x = 298,462.95 × 85,120.71
  4. Step 4: Simplify right side
    198,961.08x = 25,405,378,212.69
  5. Step 5: Solve for x
    x = 25,405,378,212.69/198,961.08
  6. Step 6: Final answer
    x = 127,690.19

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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.