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Finding the Fourth Proportional to 133,093.40, 199,785.90 and 83,229.80

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Solution

The fourth proportional to 133,093.40, 199,785.90 and 83,229.80 is: 124,935.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,093.40 : 199,785.90 = 83,229.80 : x
  2. Step 2: Convert to fraction form
    133,093.40/199,785.90 = 83,229.80/x
  3. Step 3: Cross multiply
    133,093.40x = 199,785.90 × 83,229.80
  4. Step 4: Simplify right side
    133,093.40x = 16,628,140,499.82
  5. Step 5: Solve for x
    x = 16,628,140,499.82/133,093.40
  6. Step 6: Final answer
    x = 124,935.88

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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.