Home / 141,980-195,945.60-81,559.04

Finding the Fourth Proportional to 141,980, 195,945.60 and 81,559.04

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Solution

The fourth proportional to 141,980, 195,945.60 and 81,559.04 is: 112,559.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,980 : 195,945.60 = 81,559.04 : x
  2. Step 2: Convert to fraction form
    141,980/195,945.60 = 81,559.04/x
  3. Step 3: Cross multiply
    141,980x = 195,945.60 × 81,559.04
  4. Step 4: Simplify right side
    141,980x = 15,981,135,028.22
  5. Step 5: Solve for x
    x = 15,981,135,028.22/141,980
  6. Step 6: Final answer
    x = 112,559.06

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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.