Home / 141,821.57-195,714.83-78,161.51

Finding the Fourth Proportional to 141,821.57, 195,714.83 and 78,161.51

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Solution

The fourth proportional to 141,821.57, 195,714.83 and 78,161.51 is: 107,863.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,821.57 : 195,714.83 = 78,161.51 : x
  2. Step 2: Convert to fraction form
    141,821.57/195,714.83 = 78,161.51/x
  3. Step 3: Cross multiply
    141,821.57x = 195,714.83 × 78,161.51
  4. Step 4: Simplify right side
    141,821.57x = 15,297,366,642.19
  5. Step 5: Solve for x
    x = 15,297,366,642.19/141,821.57
  6. Step 6: Final answer
    x = 107,863.47

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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.