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Finding the Fourth Proportional to 168,302.80, 252,213.60 and 123,578.64

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Solution

The fourth proportional to 168,302.80, 252,213.60 and 123,578.64 is: 185,191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,302.80 : 252,213.60 = 123,578.64 : x
  2. Step 2: Convert to fraction form
    168,302.80/252,213.60 = 123,578.64/x
  3. Step 3: Cross multiply
    168,302.80x = 252,213.60 × 123,578.64
  4. Step 4: Simplify right side
    168,302.80x = 31,168,213,677.50
  5. Step 5: Solve for x
    x = 31,168,213,677.50/168,302.80
  6. Step 6: Final answer
    x = 185,191.30

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1.5x scale

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.