Home / 137,736.20-206,258.70-90,734.60

Finding the Fourth Proportional to 137,736.20, 206,258.70 and 90,734.60

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Solution

The fourth proportional to 137,736.20, 206,258.70 and 90,734.60 is: 135,874.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,736.20 : 206,258.70 = 90,734.60 : x
  2. Step 2: Convert to fraction form
    137,736.20/206,258.70 = 90,734.60/x
  3. Step 3: Cross multiply
    137,736.20x = 206,258.70 × 90,734.60
  4. Step 4: Simplify right side
    137,736.20x = 18,714,800,641.02
  5. Step 5: Solve for x
    x = 18,714,800,641.02/137,736.20
  6. Step 6: Final answer
    x = 135,874.23

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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.