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Finding the Fourth Proportional to 137,734.80, 206,310.60 and 122,960.40

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Solution

The fourth proportional to 137,734.80, 206,310.60 and 122,960.40 is: 184,180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,734.80 : 206,310.60 = 122,960.40 : x
  2. Step 2: Convert to fraction form
    137,734.80/206,310.60 = 122,960.40/x
  3. Step 3: Cross multiply
    137,734.80x = 206,310.60 × 122,960.40
  4. Step 4: Simplify right side
    137,734.80x = 25,368,033,900.24
  5. Step 5: Solve for x
    x = 25,368,033,900.24/137,734.80
  6. Step 6: Final answer
    x = 184,180.28

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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.