Home / 143,679.67-198,284.10-80,017.47

Finding the Fourth Proportional to 143,679.67, 198,284.10 and 80,017.47

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Solution

The fourth proportional to 143,679.67, 198,284.10 and 80,017.47 is: 110,427.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,679.67 : 198,284.10 = 80,017.47 : x
  2. Step 2: Convert to fraction form
    143,679.67/198,284.10 = 80,017.47/x
  3. Step 3: Cross multiply
    143,679.67x = 198,284.10 × 80,017.47
  4. Step 4: Simplify right side
    143,679.67x = 15,866,192,452.10
  5. Step 5: Solve for x
    x = 15,866,192,452.10/143,679.67
  6. Step 6: Final answer
    x = 110,427.54

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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.