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Finding the Fourth Proportional to 99,662.28, 138,127.60 and 97,796.04

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Solution

The fourth proportional to 99,662.28, 138,127.60 and 97,796.04 is: 135,541.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,662.28 : 138,127.60 = 97,796.04 : x
  2. Step 2: Convert to fraction form
    99,662.28/138,127.60 = 97,796.04/x
  3. Step 3: Cross multiply
    99,662.28x = 138,127.60 × 97,796.04
  4. Step 4: Simplify right side
    99,662.28x = 13,508,332,294.70
  5. Step 5: Solve for x
    x = 13,508,332,294.70/99,662.28
  6. Step 6: Final answer
    x = 135,541.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.