Home / 141,992.80-195,948.78-78,331.12

Finding the Fourth Proportional to 141,992.80, 195,948.78 and 78,331.12

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Solution

The fourth proportional to 141,992.80, 195,948.78 and 78,331.12 is: 108,096.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,992.80 : 195,948.78 = 78,331.12 : x
  2. Step 2: Convert to fraction form
    141,992.80/195,948.78 = 78,331.12/x
  3. Step 3: Cross multiply
    141,992.80x = 195,948.78 × 78,331.12
  4. Step 4: Simplify right side
    141,992.80x = 15,348,887,400.03
  5. Step 5: Solve for x
    x = 15,348,887,400.03/141,992.80
  6. Step 6: Final answer
    x = 108,096.24

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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.