Home / 115,636.88-173,370.96-78,103.76

Finding the Fourth Proportional to 115,636.88, 173,370.96 and 78,103.76

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Solution

The fourth proportional to 115,636.88, 173,370.96 and 78,103.76 is: 117,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,636.88 : 173,370.96 = 78,103.76 : x
  2. Step 2: Convert to fraction form
    115,636.88/173,370.96 = 78,103.76/x
  3. Step 3: Cross multiply
    115,636.88x = 173,370.96 × 78,103.76
  4. Step 4: Simplify right side
    115,636.88x = 13,540,923,850.81
  5. Step 5: Solve for x
    x = 13,540,923,850.81/115,636.88
  6. Step 6: Final answer
    x = 117,098.66

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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.