Home / 115,420.31-173,185.30-79,936.24

Finding the Fourth Proportional to 115,420.31, 173,185.30 and 79,936.24

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Solution

The fourth proportional to 115,420.31, 173,185.30 and 79,936.24 is: 119,942.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,420.31 : 173,185.30 = 79,936.24 : x
  2. Step 2: Convert to fraction form
    115,420.31/173,185.30 = 79,936.24/x
  3. Step 3: Cross multiply
    115,420.31x = 173,185.30 × 79,936.24
  4. Step 4: Simplify right side
    115,420.31x = 13,843,781,696.95
  5. Step 5: Solve for x
    x = 13,843,781,696.95/115,420.31
  6. Step 6: Final answer
    x = 119,942.33

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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.