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Finding the Fourth Proportional to 135,909.60, 203,864.40 and 123,662.40

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Solution

The fourth proportional to 135,909.60, 203,864.40 and 123,662.40 is: 185,493.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,909.60 : 203,864.40 = 123,662.40 : x
  2. Step 2: Convert to fraction form
    135,909.60/203,864.40 = 123,662.40/x
  3. Step 3: Cross multiply
    135,909.60x = 203,864.40 × 123,662.40
  4. Step 4: Simplify right side
    135,909.60x = 25,210,360,978.56
  5. Step 5: Solve for x
    x = 25,210,360,978.56/135,909.60
  6. Step 6: Final answer
    x = 185,493.60

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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.