Home / 149,621-206,481.30-82,557.32

Finding the Fourth Proportional to 149,621, 206,481.30 and 82,557.32

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Solution

The fourth proportional to 149,621, 206,481.30 and 82,557.32 is: 113,931.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,621 : 206,481.30 = 82,557.32 : x
  2. Step 2: Convert to fraction form
    149,621/206,481.30 = 82,557.32/x
  3. Step 3: Cross multiply
    149,621x = 206,481.30 × 82,557.32
  4. Step 4: Simplify right side
    149,621x = 17,046,542,758.12
  5. Step 5: Solve for x
    x = 17,046,542,758.12/149,621
  6. Step 6: Final answer
    x = 113,931.49

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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.