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Finding the Fourth Proportional to 168,538.55, 252,710.01 and 79,791.30

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Solution

The fourth proportional to 168,538.55, 252,710.01 and 79,791.30 is: 119,640.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,538.55 : 252,710.01 = 79,791.30 : x
  2. Step 2: Convert to fraction form
    168,538.55/252,710.01 = 79,791.30/x
  3. Step 3: Cross multiply
    168,538.55x = 252,710.01 × 79,791.30
  4. Step 4: Simplify right side
    168,538.55x = 20,164,060,220.91
  5. Step 5: Solve for x
    x = 20,164,060,220.91/168,538.55
  6. Step 6: Final answer
    x = 119,640.64

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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.