Home / 149,733.20-206,622.96-81,736.64

Finding the Fourth Proportional to 149,733.20, 206,622.96 and 81,736.64

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Solution

The fourth proportional to 149,733.20, 206,622.96 and 81,736.64 is: 112,791.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,733.20 : 206,622.96 = 81,736.64 : x
  2. Step 2: Convert to fraction form
    149,733.20/206,622.96 = 81,736.64/x
  3. Step 3: Cross multiply
    149,733.20x = 206,622.96 × 81,736.64
  4. Step 4: Simplify right side
    149,733.20x = 16,888,666,497.25
  5. Step 5: Solve for x
    x = 16,888,666,497.25/149,733.20
  6. Step 6: Final answer
    x = 112,791.73

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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.