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Finding the Fourth Proportional to 141,321.60, 211,755.60 and 74,674.80

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Solution

The fourth proportional to 141,321.60, 211,755.60 and 74,674.80 is: 111,892.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,321.60 : 211,755.60 = 74,674.80 : x
  2. Step 2: Convert to fraction form
    141,321.60/211,755.60 = 74,674.80/x
  3. Step 3: Cross multiply
    141,321.60x = 211,755.60 × 74,674.80
  4. Step 4: Simplify right side
    141,321.60x = 15,812,807,078.88
  5. Step 5: Solve for x
    x = 15,812,807,078.88/141,321.60
  6. Step 6: Final answer
    x = 111,892.36

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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.