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Finding the Fourth Proportional to 135,685.56, 203,459.22 and 91,379.64

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Solution

The fourth proportional to 135,685.56, 203,459.22 and 91,379.64 is: 137,022.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,685.56 : 203,459.22 = 91,379.64 : x
  2. Step 2: Convert to fraction form
    135,685.56/203,459.22 = 91,379.64/x
  3. Step 3: Cross multiply
    135,685.56x = 203,459.22 × 91,379.64
  4. Step 4: Simplify right side
    135,685.56x = 18,592,030,278.28
  5. Step 5: Solve for x
    x = 18,592,030,278.28/135,685.56
  6. Step 6: Final answer
    x = 137,022.91

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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.