Home / 143,131.68-197,517.96-79,467.84

Finding the Fourth Proportional to 143,131.68, 197,517.96 and 79,467.84

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Solution

The fourth proportional to 143,131.68, 197,517.96 and 79,467.84 is: 109,663.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,131.68 : 197,517.96 = 79,467.84 : x
  2. Step 2: Convert to fraction form
    143,131.68/197,517.96 = 79,467.84/x
  3. Step 3: Cross multiply
    143,131.68x = 197,517.96 × 79,467.84
  4. Step 4: Simplify right side
    143,131.68x = 15,696,325,642.41
  5. Step 5: Solve for x
    x = 15,696,325,642.41/143,131.68
  6. Step 6: Final answer
    x = 109,663.53

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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.