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Finding the Fourth Proportional to 141,065.21, 211,651.83 and 84,945.42

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Solution

The fourth proportional to 141,065.21, 211,651.83 and 84,945.42 is: 127,450.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,065.21 : 211,651.83 = 84,945.42 : x
  2. Step 2: Convert to fraction form
    141,065.21/211,651.83 = 84,945.42/x
  3. Step 3: Cross multiply
    141,065.21x = 211,651.83 × 84,945.42
  4. Step 4: Simplify right side
    141,065.21x = 17,978,853,593.12
  5. Step 5: Solve for x
    x = 17,978,853,593.12/141,065.21
  6. Step 6: Final answer
    x = 127,450.66

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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.