Home / 206,121.14-308,779.05-142,067.90

Finding the Fourth Proportional to 206,121.14, 308,779.05 and 142,067.90

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Solution

The fourth proportional to 206,121.14, 308,779.05 and 142,067.90 is: 212,824.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,121.14 : 308,779.05 = 142,067.90 : x
  2. Step 2: Convert to fraction form
    206,121.14/308,779.05 = 142,067.90/x
  3. Step 3: Cross multiply
    206,121.14x = 308,779.05 × 142,067.90
  4. Step 4: Simplify right side
    206,121.14x = 43,867,591,197.50
  5. Step 5: Solve for x
    x = 43,867,591,197.50/206,121.14
  6. Step 6: Final answer
    x = 212,824.32

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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.