Home / 149,949.94-206,930.92-81,967.20

Finding the Fourth Proportional to 149,949.94, 206,930.92 and 81,967.20

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Solution

The fourth proportional to 149,949.94, 206,930.92 and 81,967.20 is: 113,114.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,949.94 : 206,930.92 = 81,967.20 : x
  2. Step 2: Convert to fraction form
    149,949.94/206,930.92 = 81,967.20/x
  3. Step 3: Cross multiply
    149,949.94x = 206,930.92 × 81,967.20
  4. Step 4: Simplify right side
    149,949.94x = 16,961,548,105.82
  5. Step 5: Solve for x
    x = 16,961,548,105.82/149,949.94
  6. Step 6: Final answer
    x = 113,114.74

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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.