Home / 78,181.55-117,272.35-19,016.85

Finding the Fourth Proportional to 78,181.55, 117,272.35 and 19,016.85

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Solution

The fourth proportional to 78,181.55, 117,272.35 and 19,016.85 is: 28,525.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,181.55 : 117,272.35 = 19,016.85 : x
  2. Step 2: Convert to fraction form
    78,181.55/117,272.35 = 19,016.85/x
  3. Step 3: Cross multiply
    78,181.55x = 117,272.35 × 19,016.85
  4. Step 4: Simplify right side
    78,181.55x = 2,230,150,594.01
  5. Step 5: Solve for x
    x = 2,230,150,594.01/78,181.55
  6. Step 6: Final answer
    x = 28,525.28

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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.