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Finding the Fourth Proportional to 121,958.64, 182,748.31 and 84,591.72

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Solution

The fourth proportional to 121,958.64, 182,748.31 and 84,591.72 is: 126,756.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,958.64 : 182,748.31 = 84,591.72 : x
  2. Step 2: Convert to fraction form
    121,958.64/182,748.31 = 84,591.72/x
  3. Step 3: Cross multiply
    121,958.64x = 182,748.31 × 84,591.72
  4. Step 4: Simplify right side
    121,958.64x = 15,458,993,869.99
  5. Step 5: Solve for x
    x = 15,458,993,869.99/121,958.64
  6. Step 6: Final answer
    x = 126,756.04

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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.