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Finding the Fourth Proportional to 115,540.60, 173,310.90 and 113,207.80

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Solution

The fourth proportional to 115,540.60, 173,310.90 and 113,207.80 is: 169,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,540.60 : 173,310.90 = 113,207.80 : x
  2. Step 2: Convert to fraction form
    115,540.60/173,310.90 = 113,207.80/x
  3. Step 3: Cross multiply
    115,540.60x = 173,310.90 × 113,207.80
  4. Step 4: Simplify right side
    115,540.60x = 19,620,145,705.02
  5. Step 5: Solve for x
    x = 19,620,145,705.02/115,540.60
  6. Step 6: Final answer
    x = 169,811.70

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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.