Home / 149,382.03-206,144.58-81,399.50

Finding the Fourth Proportional to 149,382.03, 206,144.58 and 81,399.50

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Solution

The fourth proportional to 149,382.03, 206,144.58 and 81,399.50 is: 112,329.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,382.03 : 206,144.58 = 81,399.50 : x
  2. Step 2: Convert to fraction form
    149,382.03/206,144.58 = 81,399.50/x
  3. Step 3: Cross multiply
    149,382.03x = 206,144.58 × 81,399.50
  4. Step 4: Simplify right side
    149,382.03x = 16,780,064,708.99
  5. Step 5: Solve for x
    x = 16,780,064,708.99/149,382.03
  6. Step 6: Final answer
    x = 112,329.87

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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.