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Finding the Fourth Proportional to 119,956.53, 165,540.07 and 66,245.20

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Solution

The fourth proportional to 119,956.53, 165,540.07 and 66,245.20 is: 91,418.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,956.53 : 165,540.07 = 66,245.20 : x
  2. Step 2: Convert to fraction form
    119,956.53/165,540.07 = 66,245.20/x
  3. Step 3: Cross multiply
    119,956.53x = 165,540.07 × 66,245.20
  4. Step 4: Simplify right side
    119,956.53x = 10,966,235,045.16
  5. Step 5: Solve for x
    x = 10,966,235,045.16/119,956.53
  6. Step 6: Final answer
    x = 91,418.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.