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Finding the Fourth Proportional to 168,609.64, 252,696.42 and 126,156.64

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Solution

The fourth proportional to 168,609.64, 252,696.42 and 126,156.64 is: 189,071.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,609.64 : 252,696.42 = 126,156.64 : x
  2. Step 2: Convert to fraction form
    168,609.64/252,696.42 = 126,156.64/x
  3. Step 3: Cross multiply
    168,609.64x = 252,696.42 × 126,156.64
  4. Step 4: Simplify right side
    168,609.64x = 31,879,331,287.23
  5. Step 5: Solve for x
    x = 31,879,331,287.23/168,609.64
  6. Step 6: Final answer
    x = 189,071.82

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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.