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Finding the Fourth Proportional to 169,942.80, 255,108.60 and 99,861.60

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Solution

The fourth proportional to 169,942.80, 255,108.60 and 99,861.60 is: 149,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,942.80 : 255,108.60 = 99,861.60 : x
  2. Step 2: Convert to fraction form
    169,942.80/255,108.60 = 99,861.60/x
  3. Step 3: Cross multiply
    169,942.80x = 255,108.60 × 99,861.60
  4. Step 4: Simplify right side
    169,942.80x = 25,475,552,969.76
  5. Step 5: Solve for x
    x = 25,475,552,969.76/169,942.80
  6. Step 6: Final answer
    x = 149,906.63

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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.