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Finding the Fourth Proportional to 117,301.44, 161,874 and 66,313.38

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Solution

The fourth proportional to 117,301.44, 161,874 and 66,313.38 is: 91,511.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,301.44 : 161,874 = 66,313.38 : x
  2. Step 2: Convert to fraction form
    117,301.44/161,874 = 66,313.38/x
  3. Step 3: Cross multiply
    117,301.44x = 161,874 × 66,313.38
  4. Step 4: Simplify right side
    117,301.44x = 10,734,412,074.12
  5. Step 5: Solve for x
    x = 10,734,412,074.12/117,301.44
  6. Step 6: Final answer
    x = 91,511.34

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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.