Home / 149,789.87-206,358.42-104,385.32

Finding the Fourth Proportional to 149,789.87, 206,358.42 and 104,385.32

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Solution

The fourth proportional to 149,789.87, 206,358.42 and 104,385.32 is: 143,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,789.87 : 206,358.42 = 104,385.32 : x
  2. Step 2: Convert to fraction form
    149,789.87/206,358.42 = 104,385.32/x
  3. Step 3: Cross multiply
    149,789.87x = 206,358.42 × 104,385.32
  4. Step 4: Simplify right side
    149,789.87x = 21,540,789,706.39
  5. Step 5: Solve for x
    x = 21,540,789,706.39/149,789.87
  6. Step 6: Final answer
    x = 143,806.72

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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.