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Finding the Fourth Proportional to 168,498, 252,820.80 and 79,814.88

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Solution

The fourth proportional to 168,498, 252,820.80 and 79,814.88 is: 119,757.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,498 : 252,820.80 = 79,814.88 : x
  2. Step 2: Convert to fraction form
    168,498/252,820.80 = 79,814.88/x
  3. Step 3: Cross multiply
    168,498x = 252,820.80 × 79,814.88
  4. Step 4: Simplify right side
    168,498x = 20,178,861,813.50
  5. Step 5: Solve for x
    x = 20,178,861,813.50/168,498
  6. Step 6: Final answer
    x = 119,757.28

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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.