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Finding the Fourth Proportional to 80,191, 110,536.09 and 63,168.30

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Solution

The fourth proportional to 80,191, 110,536.09 and 63,168.30 is: 87,071.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,191 : 110,536.09 = 63,168.30 : x
  2. Step 2: Convert to fraction form
    80,191/110,536.09 = 63,168.30/x
  3. Step 3: Cross multiply
    80,191x = 110,536.09 × 63,168.30
  4. Step 4: Simplify right side
    80,191x = 6,982,376,893.95
  5. Step 5: Solve for x
    x = 6,982,376,893.95/80,191
  6. Step 6: Final answer
    x = 87,071.83

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1.5x scale

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.