Home / 141,942.30-195,876-81,515.49

Finding the Fourth Proportional to 141,942.30, 195,876 and 81,515.49

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Solution

The fourth proportional to 141,942.30, 195,876 and 81,515.49 is: 112,488.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,942.30 : 195,876 = 81,515.49 : x
  2. Step 2: Convert to fraction form
    141,942.30/195,876 = 81,515.49/x
  3. Step 3: Cross multiply
    141,942.30x = 195,876 × 81,515.49
  4. Step 4: Simplify right side
    141,942.30x = 15,966,928,119.24
  5. Step 5: Solve for x
    x = 15,966,928,119.24/141,942.30
  6. Step 6: Final answer
    x = 112,488.86

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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.