Home / 149,651.75-206,520.62-81,669.26

Finding the Fourth Proportional to 149,651.75, 206,520.62 and 81,669.26

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Solution

The fourth proportional to 149,651.75, 206,520.62 and 81,669.26 is: 112,704.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,651.75 : 206,520.62 = 81,669.26 : x
  2. Step 2: Convert to fraction form
    149,651.75/206,520.62 = 81,669.26/x
  3. Step 3: Cross multiply
    149,651.75x = 206,520.62 × 81,669.26
  4. Step 4: Simplify right side
    149,651.75x = 16,866,384,769.19
  5. Step 5: Solve for x
    x = 16,866,384,769.19/149,651.75
  6. Step 6: Final answer
    x = 112,704.23

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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.