Home / 143,371.28-197,841.16-79,705.20

Finding the Fourth Proportional to 143,371.28, 197,841.16 and 79,705.20

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Solution

The fourth proportional to 143,371.28, 197,841.16 and 79,705.20 is: 109,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,371.28 : 197,841.16 = 79,705.20 : x
  2. Step 2: Convert to fraction form
    143,371.28/197,841.16 = 79,705.20/x
  3. Step 3: Cross multiply
    143,371.28x = 197,841.16 × 79,705.20
  4. Step 4: Simplify right side
    143,371.28x = 15,768,969,226.03
  5. Step 5: Solve for x
    x = 15,768,969,226.03/143,371.28
  6. Step 6: Final answer
    x = 109,986.95

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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.