Home / 141,320.20-195,021.84-77,662.12

Finding the Fourth Proportional to 141,320.20, 195,021.84 and 77,662.12

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Solution

The fourth proportional to 141,320.20, 195,021.84 and 77,662.12 is: 107,173.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,320.20 : 195,021.84 = 77,662.12 : x
  2. Step 2: Convert to fraction form
    141,320.20/195,021.84 = 77,662.12/x
  3. Step 3: Cross multiply
    141,320.20x = 195,021.84 × 77,662.12
  4. Step 4: Simplify right side
    141,320.20x = 15,145,809,540.70
  5. Step 5: Solve for x
    x = 15,145,809,540.70/141,320.20
  6. Step 6: Final answer
    x = 107,173.71

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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.