Home / 115,425.27-173,147.78-40,538.90

Finding the Fourth Proportional to 115,425.27, 173,147.78 and 40,538.90

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Solution

The fourth proportional to 115,425.27, 173,147.78 and 40,538.90 is: 60,811.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,425.27 : 173,147.78 = 40,538.90 : x
  2. Step 2: Convert to fraction form
    115,425.27/173,147.78 = 40,538.90/x
  3. Step 3: Cross multiply
    115,425.27x = 173,147.78 × 40,538.90
  4. Step 4: Simplify right side
    115,425.27x = 7,019,219,470.21
  5. Step 5: Solve for x
    x = 7,019,219,470.21/115,425.27
  6. Step 6: Final answer
    x = 60,811.81

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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.