Home / 143,295.12-197,745.84-79,631.64

Finding the Fourth Proportional to 143,295.12, 197,745.84 and 79,631.64

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Solution

The fourth proportional to 143,295.12, 197,745.84 and 79,631.64 is: 109,890.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,295.12 : 197,745.84 = 79,631.64 : x
  2. Step 2: Convert to fraction form
    143,295.12/197,745.84 = 79,631.64/x
  3. Step 3: Cross multiply
    143,295.12x = 197,745.84 × 79,631.64
  4. Step 4: Simplify right side
    143,295.12x = 15,746,825,542.38
  5. Step 5: Solve for x
    x = 15,746,825,542.38/143,295.12
  6. Step 6: Final answer
    x = 109,890.87

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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.