Home / 117,188.25-161,722.92-71,840.10

Finding the Fourth Proportional to 117,188.25, 161,722.92 and 71,840.10

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Solution

The fourth proportional to 117,188.25, 161,722.92 and 71,840.10 is: 99,141.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,188.25 : 161,722.92 = 71,840.10 : x
  2. Step 2: Convert to fraction form
    117,188.25/161,722.92 = 71,840.10/x
  3. Step 3: Cross multiply
    117,188.25x = 161,722.92 × 71,840.10
  4. Step 4: Simplify right side
    117,188.25x = 11,618,190,745.09
  5. Step 5: Solve for x
    x = 11,618,190,745.09/117,188.25
  6. Step 6: Final answer
    x = 99,141.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.