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Finding the Fourth Proportional to 121,550.60, 182,433.90 and 71,568.20

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Solution

The fourth proportional to 121,550.60, 182,433.90 and 71,568.20 is: 107,415.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,550.60 : 182,433.90 = 71,568.20 : x
  2. Step 2: Convert to fraction form
    121,550.60/182,433.90 = 71,568.20/x
  3. Step 3: Cross multiply
    121,550.60x = 182,433.90 × 71,568.20
  4. Step 4: Simplify right side
    121,550.60x = 13,056,465,841.98
  5. Step 5: Solve for x
    x = 13,056,465,841.98/121,550.60
  6. Step 6: Final answer
    x = 107,415.89

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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.