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Finding the Fourth Proportional to 168,755.80, 253,136.70 and 50,428.60

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Solution

The fourth proportional to 168,755.80, 253,136.70 and 50,428.60 is: 75,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,755.80 : 253,136.70 = 50,428.60 : x
  2. Step 2: Convert to fraction form
    168,755.80/253,136.70 = 50,428.60/x
  3. Step 3: Cross multiply
    168,755.80x = 253,136.70 × 50,428.60
  4. Step 4: Simplify right side
    168,755.80x = 12,765,329,389.62
  5. Step 5: Solve for x
    x = 12,765,329,389.62/168,755.80
  6. Step 6: Final answer
    x = 75,643.80

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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.