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Finding the Fourth Proportional to 115,597.40, 173,234.10 and 91,945.40

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Solution

The fourth proportional to 115,597.40, 173,234.10 and 91,945.40 is: 137,789.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,597.40 : 173,234.10 = 91,945.40 : x
  2. Step 2: Convert to fraction form
    115,597.40/173,234.10 = 91,945.40/x
  3. Step 3: Cross multiply
    115,597.40x = 173,234.10 × 91,945.40
  4. Step 4: Simplify right side
    115,597.40x = 15,928,078,618.14
  5. Step 5: Solve for x
    x = 15,928,078,618.14/115,597.40
  6. Step 6: Final answer
    x = 137,789.25

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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.