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Finding the Fourth Proportional to 117,388.59, 161,958.85 and 66,395.04

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Solution

The fourth proportional to 117,388.59, 161,958.85 and 66,395.04 is: 91,604.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,388.59 : 161,958.85 = 66,395.04 : x
  2. Step 2: Convert to fraction form
    117,388.59/161,958.85 = 66,395.04/x
  3. Step 3: Cross multiply
    117,388.59x = 161,958.85 × 66,395.04
  4. Step 4: Simplify right side
    117,388.59x = 10,753,264,324.10
  5. Step 5: Solve for x
    x = 10,753,264,324.10/117,388.59
  6. Step 6: Final answer
    x = 91,604.00

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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.