Home / 105,660.97-158,517.40-30,781.77

Finding the Fourth Proportional to 105,660.97, 158,517.40 and 30,781.77

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Solution

The fourth proportional to 105,660.97, 158,517.40 and 30,781.77 is: 46,180.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,660.97 : 158,517.40 = 30,781.77 : x
  2. Step 2: Convert to fraction form
    105,660.97/158,517.40 = 30,781.77/x
  3. Step 3: Cross multiply
    105,660.97x = 158,517.40 × 30,781.77
  4. Step 4: Simplify right side
    105,660.97x = 4,879,446,147.80
  5. Step 5: Solve for x
    x = 4,879,446,147.80/105,660.97
  6. Step 6: Final answer
    x = 46,180.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.