Home / 141,768.24-195,640.65-78,105.88

Finding the Fourth Proportional to 141,768.24, 195,640.65 and 78,105.88

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Solution

The fourth proportional to 141,768.24, 195,640.65 and 78,105.88 is: 107,786.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,768.24 : 195,640.65 = 78,105.88 : x
  2. Step 2: Convert to fraction form
    141,768.24/195,640.65 = 78,105.88/x
  3. Step 3: Cross multiply
    141,768.24x = 195,640.65 × 78,105.88
  4. Step 4: Simplify right side
    141,768.24x = 15,280,685,132.02
  5. Step 5: Solve for x
    x = 15,280,685,132.02/141,768.24
  6. Step 6: Final answer
    x = 107,786.38

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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.