Home / 141,824.70-195,720.39-78,161.58

Finding the Fourth Proportional to 141,824.70, 195,720.39 and 78,161.58

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Solution

The fourth proportional to 141,824.70, 195,720.39 and 78,161.58 is: 107,864.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,824.70 : 195,720.39 = 78,161.58 : x
  2. Step 2: Convert to fraction form
    141,824.70/195,720.39 = 78,161.58/x
  3. Step 3: Cross multiply
    141,824.70x = 195,720.39 × 78,161.58
  4. Step 4: Simplify right side
    141,824.70x = 15,297,814,920.62
  5. Step 5: Solve for x
    x = 15,297,814,920.62/141,824.70
  6. Step 6: Final answer
    x = 107,864.25

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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.