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Finding the Fourth Proportional to 168,468.20, 252,395.10 and 137,133.80

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Solution

The fourth proportional to 168,468.20, 252,395.10 and 137,133.80 is: 205,450.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,468.20 : 252,395.10 = 137,133.80 : x
  2. Step 2: Convert to fraction form
    168,468.20/252,395.10 = 137,133.80/x
  3. Step 3: Cross multiply
    168,468.20x = 252,395.10 × 137,133.80
  4. Step 4: Simplify right side
    168,468.20x = 34,611,899,164.38
  5. Step 5: Solve for x
    x = 34,611,899,164.38/168,468.20
  6. Step 6: Final answer
    x = 205,450.64

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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.