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Finding the Fourth Proportional to 117,322.34, 161,845.38 and 74,229.54

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Solution

The fourth proportional to 117,322.34, 161,845.38 and 74,229.54 is: 102,399.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,322.34 : 161,845.38 = 74,229.54 : x
  2. Step 2: Convert to fraction form
    117,322.34/161,845.38 = 74,229.54/x
  3. Step 3: Cross multiply
    117,322.34x = 161,845.38 × 74,229.54
  4. Step 4: Simplify right side
    117,322.34x = 12,013,708,108.53
  5. Step 5: Solve for x
    x = 12,013,708,108.53/117,322.34
  6. Step 6: Final answer
    x = 102,399.15

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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.