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Finding the Fourth Proportional to 123,141.66, 169,935.53 and 66,553.03

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Solution

The fourth proportional to 123,141.66, 169,935.53 and 66,553.03 is: 91,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,141.66 : 169,935.53 = 66,553.03 : x
  2. Step 2: Convert to fraction form
    123,141.66/169,935.53 = 66,553.03/x
  3. Step 3: Cross multiply
    123,141.66x = 169,935.53 × 66,553.03
  4. Step 4: Simplify right side
    123,141.66x = 11,309,724,426.16
  5. Step 5: Solve for x
    x = 11,309,724,426.16/123,141.66
  6. Step 6: Final answer
    x = 91,843.20

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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.