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Finding the Fourth Proportional to 135,997.60, 203,823.60 and 65,725.60

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Solution

The fourth proportional to 135,997.60, 203,823.60 and 65,725.60 is: 98,504.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,997.60 : 203,823.60 = 65,725.60 : x
  2. Step 2: Convert to fraction form
    135,997.60/203,823.60 = 65,725.60/x
  3. Step 3: Cross multiply
    135,997.60x = 203,823.60 × 65,725.60
  4. Step 4: Simplify right side
    135,997.60x = 13,396,428,404.16
  5. Step 5: Solve for x
    x = 13,396,428,404.16/135,997.60
  6. Step 6: Final answer
    x = 98,504.89

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1.5x scale

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.