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Finding the Fourth Proportional to 168,491.91, 252,613.02 and 79,641.60

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Solution

The fourth proportional to 168,491.91, 252,613.02 and 79,641.60 is: 119,403.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,491.91 : 252,613.02 = 79,641.60 : x
  2. Step 2: Convert to fraction form
    168,491.91/252,613.02 = 79,641.60/x
  3. Step 3: Cross multiply
    168,491.91x = 252,613.02 × 79,641.60
  4. Step 4: Simplify right side
    168,491.91x = 20,118,505,093.63
  5. Step 5: Solve for x
    x = 20,118,505,093.63/168,491.91
  6. Step 6: Final answer
    x = 119,403.39

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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.