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Finding the Fourth Proportional to 134,791.80, 202,230.90 and 90,468.60

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Solution

The fourth proportional to 134,791.80, 202,230.90 and 90,468.60 is: 135,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,791.80 : 202,230.90 = 90,468.60 : x
  2. Step 2: Convert to fraction form
    134,791.80/202,230.90 = 90,468.60/x
  3. Step 3: Cross multiply
    134,791.80x = 202,230.90 × 90,468.60
  4. Step 4: Simplify right side
    134,791.80x = 18,295,546,399.74
  5. Step 5: Solve for x
    x = 18,295,546,399.74/134,791.80
  6. Step 6: Final answer
    x = 135,731.89

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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.