Home / 149,951.92-206,919.36-81,964.60

Finding the Fourth Proportional to 149,951.92, 206,919.36 and 81,964.60

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Solution

The fourth proportional to 149,951.92, 206,919.36 and 81,964.60 is: 113,103.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,951.92 : 206,919.36 = 81,964.60 : x
  2. Step 2: Convert to fraction form
    149,951.92/206,919.36 = 81,964.60/x
  3. Step 3: Cross multiply
    149,951.92x = 206,919.36 × 81,964.60
  4. Step 4: Simplify right side
    149,951.92x = 16,960,062,574.66
  5. Step 5: Solve for x
    x = 16,960,062,574.66/149,951.92
  6. Step 6: Final answer
    x = 113,103.34

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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.