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Finding the Fourth Proportional to 123,630.44, 170,634.22 and 80,663.20

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Solution

The fourth proportional to 123,630.44, 170,634.22 and 80,663.20 is: 111,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,630.44 : 170,634.22 = 80,663.20 : x
  2. Step 2: Convert to fraction form
    123,630.44/170,634.22 = 80,663.20/x
  3. Step 3: Cross multiply
    123,630.44x = 170,634.22 × 80,663.20
  4. Step 4: Simplify right side
    123,630.44x = 13,763,902,214.70
  5. Step 5: Solve for x
    x = 13,763,902,214.70/123,630.44
  6. Step 6: Final answer
    x = 111,331.01

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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.