Home / 141,906.48-195,822-78,244.80

Finding the Fourth Proportional to 141,906.48, 195,822 and 78,244.80

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Solution

The fourth proportional to 141,906.48, 195,822 and 78,244.80 is: 107,972.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,906.48 : 195,822 = 78,244.80 : x
  2. Step 2: Convert to fraction form
    141,906.48/195,822 = 78,244.80/x
  3. Step 3: Cross multiply
    141,906.48x = 195,822 × 78,244.80
  4. Step 4: Simplify right side
    141,906.48x = 15,322,053,225.60
  5. Step 5: Solve for x
    x = 15,322,053,225.60/141,906.48
  6. Step 6: Final answer
    x = 107,972.89

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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.