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Finding the Fourth Proportional to 168,218.12, 252,102.98 and 79,495.16

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Solution

The fourth proportional to 168,218.12, 252,102.98 and 79,495.16 is: 119,136.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,218.12 : 252,102.98 = 79,495.16 : x
  2. Step 2: Convert to fraction form
    168,218.12/252,102.98 = 79,495.16/x
  3. Step 3: Cross multiply
    168,218.12x = 252,102.98 × 79,495.16
  4. Step 4: Simplify right side
    168,218.12x = 20,040,966,731.58
  5. Step 5: Solve for x
    x = 20,040,966,731.58/168,218.12
  6. Step 6: Final answer
    x = 119,136.79

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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.