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Finding the Fourth Proportional to 168,661.20, 253,186.20 and 102,176.40

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Solution

The fourth proportional to 168,661.20, 253,186.20 and 102,176.40 is: 153,382.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,661.20 : 253,186.20 = 102,176.40 : x
  2. Step 2: Convert to fraction form
    168,661.20/253,186.20 = 102,176.40/x
  3. Step 3: Cross multiply
    168,661.20x = 253,186.20 × 102,176.40
  4. Step 4: Simplify right side
    168,661.20x = 25,869,654,445.68
  5. Step 5: Solve for x
    x = 25,869,654,445.68/168,661.20
  6. Step 6: Final answer
    x = 153,382.37

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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.