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Finding the Fourth Proportional to 169,640.20, 254,460.30 and 161,086.60

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Solution

The fourth proportional to 169,640.20, 254,460.30 and 161,086.60 is: 241,629.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,640.20 : 254,460.30 = 161,086.60 : x
  2. Step 2: Convert to fraction form
    169,640.20/254,460.30 = 161,086.60/x
  3. Step 3: Cross multiply
    169,640.20x = 254,460.30 × 161,086.60
  4. Step 4: Simplify right side
    169,640.20x = 40,990,144,561.98
  5. Step 5: Solve for x
    x = 40,990,144,561.98/169,640.20
  6. Step 6: Final answer
    x = 241,629.90

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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.