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Finding the Fourth Proportional to 92,338.56, 128,286.72 and 91,232.64

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Solution

The fourth proportional to 92,338.56, 128,286.72 and 91,232.64 is: 126,750.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,338.56 : 128,286.72 = 91,232.64 : x
  2. Step 2: Convert to fraction form
    92,338.56/128,286.72 = 91,232.64/x
  3. Step 3: Cross multiply
    92,338.56x = 128,286.72 × 91,232.64
  4. Step 4: Simplify right side
    92,338.56x = 11,703,936,142.54
  5. Step 5: Solve for x
    x = 11,703,936,142.54/92,338.56
  6. Step 6: Final answer
    x = 126,750.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.