Home / 206,506.80-284,974.20-121,629.60

Finding the Fourth Proportional to 206,506.80, 284,974.20 and 121,629.60

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Solution

The fourth proportional to 206,506.80, 284,974.20 and 121,629.60 is: 167,845.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,506.80 : 284,974.20 = 121,629.60 : x
  2. Step 2: Convert to fraction form
    206,506.80/284,974.20 = 121,629.60/x
  3. Step 3: Cross multiply
    206,506.80x = 284,974.20 × 121,629.60
  4. Step 4: Simplify right side
    206,506.80x = 34,661,297,956.32
  5. Step 5: Solve for x
    x = 34,661,297,956.32/206,506.80
  6. Step 6: Final answer
    x = 167,845.79

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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.