Home / 78,181.33-117,272.09-19,016.59

Finding the Fourth Proportional to 78,181.33, 117,272.09 and 19,016.59

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Solution

The fourth proportional to 78,181.33, 117,272.09 and 19,016.59 is: 28,524.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,181.33 : 117,272.09 = 19,016.59 : x
  2. Step 2: Convert to fraction form
    78,181.33/117,272.09 = 19,016.59/x
  3. Step 3: Cross multiply
    78,181.33x = 117,272.09 × 19,016.59
  4. Step 4: Simplify right side
    78,181.33x = 2,230,115,253.97
  5. Step 5: Solve for x
    x = 2,230,115,253.97/78,181.33
  6. Step 6: Final answer
    x = 28,524.91

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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.