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Finding the Fourth Proportional to 143,284.80, 197,745.44 and 79,621.44

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Solution

The fourth proportional to 143,284.80, 197,745.44 and 79,621.44 is: 109,884.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,284.80 : 197,745.44 = 79,621.44 : x
  2. Step 2: Convert to fraction form
    143,284.80/197,745.44 = 79,621.44/x
  3. Step 3: Cross multiply
    143,284.80x = 197,745.44 × 79,621.44
  4. Step 4: Simplify right side
    143,284.80x = 15,744,776,686.23
  5. Step 5: Solve for x
    x = 15,744,776,686.23/143,284.80
  6. Step 6: Final answer
    x = 109,884.49

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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.