Home / 115,757.14-173,517.31-78,321.17

Finding the Fourth Proportional to 115,757.14, 173,517.31 and 78,321.17

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Solution

The fourth proportional to 115,757.14, 173,517.31 and 78,321.17 is: 117,401.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,757.14 : 173,517.31 = 78,321.17 : x
  2. Step 2: Convert to fraction form
    115,757.14/173,517.31 = 78,321.17/x
  3. Step 3: Cross multiply
    115,757.14x = 173,517.31 × 78,321.17
  4. Step 4: Simplify right side
    115,757.14x = 13,590,077,475.26
  5. Step 5: Solve for x
    x = 13,590,077,475.26/115,757.14
  6. Step 6: Final answer
    x = 117,401.63

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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.