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Finding the Fourth Proportional to 135,910.60, 203,890.20 and 57,032.80

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Solution

The fourth proportional to 135,910.60, 203,890.20 and 57,032.80 is: 85,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,910.60 : 203,890.20 = 57,032.80 : x
  2. Step 2: Convert to fraction form
    135,910.60/203,890.20 = 57,032.80/x
  3. Step 3: Cross multiply
    135,910.60x = 203,890.20 × 57,032.80
  4. Step 4: Simplify right side
    135,910.60x = 11,628,428,998.56
  5. Step 5: Solve for x
    x = 11,628,428,998.56/135,910.60
  6. Step 6: Final answer
    x = 85,559.40

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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.