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Finding the Fourth Proportional to 149,458.76, 206,310.66 and 109,489.97

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Solution

The fourth proportional to 149,458.76, 206,310.66 and 109,489.97 is: 151,138.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,458.76 : 206,310.66 = 109,489.97 : x
  2. Step 2: Convert to fraction form
    149,458.76/206,310.66 = 109,489.97/x
  3. Step 3: Cross multiply
    149,458.76x = 206,310.66 × 109,489.97
  4. Step 4: Simplify right side
    149,458.76x = 22,588,947,974.08
  5. Step 5: Solve for x
    x = 22,588,947,974.08/149,458.76
  6. Step 6: Final answer
    x = 151,138.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.