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Finding the Fourth Proportional to 98,481.30, 135,857.76 and 58,168.20

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Solution

The fourth proportional to 98,481.30, 135,857.76 and 58,168.20 is: 80,244.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,481.30 : 135,857.76 = 58,168.20 : x
  2. Step 2: Convert to fraction form
    98,481.30/135,857.76 = 58,168.20/x
  3. Step 3: Cross multiply
    98,481.30x = 135,857.76 × 58,168.20
  4. Step 4: Simplify right side
    98,481.30x = 7,902,601,355.23
  5. Step 5: Solve for x
    x = 7,902,601,355.23/98,481.30
  6. Step 6: Final answer
    x = 80,244.69

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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.