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Finding the Fourth Proportional to 202,520.60, 303,489.30 and 90,108.80

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Solution

The fourth proportional to 202,520.60, 303,489.30 and 90,108.80 is: 135,033.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,520.60 : 303,489.30 = 90,108.80 : x
  2. Step 2: Convert to fraction form
    202,520.60/303,489.30 = 90,108.80/x
  3. Step 3: Cross multiply
    202,520.60x = 303,489.30 × 90,108.80
  4. Step 4: Simplify right side
    202,520.60x = 27,347,056,635.84
  5. Step 5: Solve for x
    x = 27,347,056,635.84/202,520.60
  6. Step 6: Final answer
    x = 135,033.46

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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.