Home / 206,826.80-309,912.15-136,624.10

Finding the Fourth Proportional to 206,826.80, 309,912.15 and 136,624.10

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Solution

The fourth proportional to 206,826.80, 309,912.15 and 136,624.10 is: 204,719.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,826.80 : 309,912.15 = 136,624.10 : x
  2. Step 2: Convert to fraction form
    206,826.80/309,912.15 = 136,624.10/x
  3. Step 3: Cross multiply
    206,826.80x = 309,912.15 × 136,624.10
  4. Step 4: Simplify right side
    206,826.80x = 42,341,468,572.82
  5. Step 5: Solve for x
    x = 42,341,468,572.82/206,826.80
  6. Step 6: Final answer
    x = 204,719.45

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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.