Home / 78,181.08-117,271.70-19,016.34

Finding the Fourth Proportional to 78,181.08, 117,271.70 and 19,016.34

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Solution

The fourth proportional to 78,181.08, 117,271.70 and 19,016.34 is: 28,524.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,181.08 : 117,271.70 = 19,016.34 : x
  2. Step 2: Convert to fraction form
    78,181.08/117,271.70 = 19,016.34/x
  3. Step 3: Cross multiply
    78,181.08x = 117,271.70 × 19,016.34
  4. Step 4: Simplify right side
    78,181.08x = 2,230,078,519.58
  5. Step 5: Solve for x
    x = 2,230,078,519.58/78,181.08
  6. Step 6: Final answer
    x = 28,524.53

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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.