Home / 211,978.92-318,000.66-131,952.14

Finding the Fourth Proportional to 211,978.92, 318,000.66 and 131,952.14

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Solution

The fourth proportional to 211,978.92, 318,000.66 and 131,952.14 is: 197,948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,978.92 : 318,000.66 = 131,952.14 : x
  2. Step 2: Convert to fraction form
    211,978.92/318,000.66 = 131,952.14/x
  3. Step 3: Cross multiply
    211,978.92x = 318,000.66 × 131,952.14
  4. Step 4: Simplify right side
    211,978.92x = 41,960,867,087.21
  5. Step 5: Solve for x
    x = 41,960,867,087.21/211,978.92
  6. Step 6: Final answer
    x = 197,948.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.