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Finding the Fourth Proportional to 117,313.11, 161,891.06 and 65,629.64

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Solution

The fourth proportional to 117,313.11, 161,891.06 and 65,629.64 is: 90,568.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,313.11 : 161,891.06 = 65,629.64 : x
  2. Step 2: Convert to fraction form
    117,313.11/161,891.06 = 65,629.64/x
  3. Step 3: Cross multiply
    117,313.11x = 161,891.06 × 65,629.64
  4. Step 4: Simplify right side
    117,313.11x = 10,624,852,063.60
  5. Step 5: Solve for x
    x = 10,624,852,063.60/117,313.11
  6. Step 6: Final answer
    x = 90,568.33

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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.