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Finding the Fourth Proportional to 117,283.49, 161,849.45 and 66,294.43

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Solution

The fourth proportional to 117,283.49, 161,849.45 and 66,294.43 is: 91,485.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,283.49 : 161,849.45 = 66,294.43 : x
  2. Step 2: Convert to fraction form
    117,283.49/161,849.45 = 66,294.43/x
  3. Step 3: Cross multiply
    117,283.49x = 161,849.45 × 66,294.43
  4. Step 4: Simplify right side
    117,283.49x = 10,729,716,794.68
  5. Step 5: Solve for x
    x = 10,729,716,794.68/117,283.49
  6. Step 6: Final answer
    x = 91,485.31

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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.