Home / 141,517.02-195,321.41-81,128.22

Finding the Fourth Proportional to 141,517.02, 195,321.41 and 81,128.22

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Solution

The fourth proportional to 141,517.02, 195,321.41 and 81,128.22 is: 111,972.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,517.02 : 195,321.41 = 81,128.22 : x
  2. Step 2: Convert to fraction form
    141,517.02/195,321.41 = 81,128.22/x
  3. Step 3: Cross multiply
    141,517.02x = 195,321.41 × 81,128.22
  4. Step 4: Simplify right side
    141,517.02x = 15,846,078,321.19
  5. Step 5: Solve for x
    x = 15,846,078,321.19/141,517.02
  6. Step 6: Final answer
    x = 111,972.95

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1.5x scale

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.