Home / 115,540.40-173,310.60-109,125.20

Finding the Fourth Proportional to 115,540.40, 173,310.60 and 109,125.20

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Solution

The fourth proportional to 115,540.40, 173,310.60 and 109,125.20 is: 163,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,540.40 : 173,310.60 = 109,125.20 : x
  2. Step 2: Convert to fraction form
    115,540.40/173,310.60 = 109,125.20/x
  3. Step 3: Cross multiply
    115,540.40x = 173,310.60 × 109,125.20
  4. Step 4: Simplify right side
    115,540.40x = 18,912,553,887.12
  5. Step 5: Solve for x
    x = 18,912,553,887.12/115,540.40
  6. Step 6: Final answer
    x = 163,687.80

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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.