Home / 143,067.96-197,437.50-78,540.12

Finding the Fourth Proportional to 143,067.96, 197,437.50 and 78,540.12

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Solution

The fourth proportional to 143,067.96, 197,437.50 and 78,540.12 is: 108,387.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,067.96 : 197,437.50 = 78,540.12 : x
  2. Step 2: Convert to fraction form
    143,067.96/197,437.50 = 78,540.12/x
  3. Step 3: Cross multiply
    143,067.96x = 197,437.50 × 78,540.12
  4. Step 4: Simplify right side
    143,067.96x = 15,506,764,942.50
  5. Step 5: Solve for x
    x = 15,506,764,942.50/143,067.96
  6. Step 6: Final answer
    x = 108,387.41

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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.