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Finding the Fourth Proportional to 135,653.40, 203,480.10 and 115,608.60

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Solution

The fourth proportional to 135,653.40, 203,480.10 and 115,608.60 is: 173,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,653.40 : 203,480.10 = 115,608.60 : x
  2. Step 2: Convert to fraction form
    135,653.40/203,480.10 = 115,608.60/x
  3. Step 3: Cross multiply
    135,653.40x = 203,480.10 × 115,608.60
  4. Step 4: Simplify right side
    135,653.40x = 23,524,049,488.86
  5. Step 5: Solve for x
    x = 23,524,049,488.86/135,653.40
  6. Step 6: Final answer
    x = 173,412.90

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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.