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Finding the Fourth Proportional to 168,004.80, 251,812.80 and 68,115.60

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Solution

The fourth proportional to 168,004.80, 251,812.80 and 68,115.60 is: 102,094.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,004.80 : 251,812.80 = 68,115.60 : x
  2. Step 2: Convert to fraction form
    168,004.80/251,812.80 = 68,115.60/x
  3. Step 3: Cross multiply
    168,004.80x = 251,812.80 × 68,115.60
  4. Step 4: Simplify right side
    168,004.80x = 17,152,379,959.68
  5. Step 5: Solve for x
    x = 17,152,379,959.68/168,004.80
  6. Step 6: Final answer
    x = 102,094.58

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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.