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Finding the Fourth Proportional to 202,190.80, 303,286.20 and 89,870.80

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Solution

The fourth proportional to 202,190.80, 303,286.20 and 89,870.80 is: 134,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,190.80 : 303,286.20 = 89,870.80 : x
  2. Step 2: Convert to fraction form
    202,190.80/303,286.20 = 89,870.80/x
  3. Step 3: Cross multiply
    202,190.80x = 303,286.20 × 89,870.80
  4. Step 4: Simplify right side
    202,190.80x = 27,256,573,422.96
  5. Step 5: Solve for x
    x = 27,256,573,422.96/202,190.80
  6. Step 6: Final answer
    x = 134,806.20

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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.