Home / 115,491.12-173,434.32-71,379.60

Finding the Fourth Proportional to 115,491.12, 173,434.32 and 71,379.60

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Solution

The fourth proportional to 115,491.12, 173,434.32 and 71,379.60 is: 107,191.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,491.12 : 173,434.32 = 71,379.60 : x
  2. Step 2: Convert to fraction form
    115,491.12/173,434.32 = 71,379.60/x
  3. Step 3: Cross multiply
    115,491.12x = 173,434.32 × 71,379.60
  4. Step 4: Simplify right side
    115,491.12x = 12,379,672,387.87
  5. Step 5: Solve for x
    x = 12,379,672,387.87/115,491.12
  6. Step 6: Final answer
    x = 107,191.55

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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.