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Finding the Fourth Proportional to 137,704.80, 206,557.20 and 136,392.60

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Solution

The fourth proportional to 137,704.80, 206,557.20 and 136,392.60 is: 204,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,704.80 : 206,557.20 = 136,392.60 : x
  2. Step 2: Convert to fraction form
    137,704.80/206,557.20 = 136,392.60/x
  3. Step 3: Cross multiply
    137,704.80x = 206,557.20 × 136,392.60
  4. Step 4: Simplify right side
    137,704.80x = 28,172,873,556.72
  5. Step 5: Solve for x
    x = 28,172,873,556.72/137,704.80
  6. Step 6: Final answer
    x = 204,588.90

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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.