Home / 206,619.30-309,410.55-136,116.90

Finding the Fourth Proportional to 206,619.30, 309,410.55 and 136,116.90

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Solution

The fourth proportional to 206,619.30, 309,410.55 and 136,116.90 is: 203,833.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,619.30 : 309,410.55 = 136,116.90 : x
  2. Step 2: Convert to fraction form
    206,619.30/309,410.55 = 136,116.90/x
  3. Step 3: Cross multiply
    206,619.30x = 309,410.55 × 136,116.90
  4. Step 4: Simplify right side
    206,619.30x = 42,116,004,893.30
  5. Step 5: Solve for x
    x = 42,116,004,893.30/206,619.30
  6. Step 6: Final answer
    x = 203,833.84

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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.