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Finding the Fourth Proportional to 149,662.39, 206,479.93 and 115,217.64

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Solution

The fourth proportional to 149,662.39, 206,479.93 and 115,217.64 is: 158,958.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,662.39 : 206,479.93 = 115,217.64 : x
  2. Step 2: Convert to fraction form
    149,662.39/206,479.93 = 115,217.64/x
  3. Step 3: Cross multiply
    149,662.39x = 206,479.93 × 115,217.64
  4. Step 4: Simplify right side
    149,662.39x = 23,790,130,241.97
  5. Step 5: Solve for x
    x = 23,790,130,241.97/149,662.39
  6. Step 6: Final answer
    x = 158,958.64

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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.