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Finding the Fourth Proportional to 149,894.38, 206,866.04 and 85,366.34

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Solution

The fourth proportional to 149,894.38, 206,866.04 and 85,366.34 is: 117,812.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,894.38 : 206,866.04 = 85,366.34 : x
  2. Step 2: Convert to fraction form
    149,894.38/206,866.04 = 85,366.34/x
  3. Step 3: Cross multiply
    149,894.38x = 206,866.04 × 85,366.34
  4. Step 4: Simplify right side
    149,894.38x = 17,659,396,705.09
  5. Step 5: Solve for x
    x = 17,659,396,705.09/149,894.38
  6. Step 6: Final answer
    x = 117,812.27

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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.