Home / 149,903.28-206,860.38-81,922.50

Finding the Fourth Proportional to 149,903.28, 206,860.38 and 81,922.50

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Solution

The fourth proportional to 149,903.28, 206,860.38 and 81,922.50 is: 113,049.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,903.28 : 206,860.38 = 81,922.50 : x
  2. Step 2: Convert to fraction form
    149,903.28/206,860.38 = 81,922.50/x
  3. Step 3: Cross multiply
    149,903.28x = 206,860.38 × 81,922.50
  4. Step 4: Simplify right side
    149,903.28x = 16,946,519,480.55
  5. Step 5: Solve for x
    x = 16,946,519,480.55/149,903.28
  6. Step 6: Final answer
    x = 113,049.69

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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.