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Finding the Fourth Proportional to 117,404.66, 161,896.62 and 100,464.96

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Solution

The fourth proportional to 117,404.66, 161,896.62 and 100,464.96 is: 138,537.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,404.66 : 161,896.62 = 100,464.96 : x
  2. Step 2: Convert to fraction form
    117,404.66/161,896.62 = 100,464.96/x
  3. Step 3: Cross multiply
    117,404.66x = 161,896.62 × 100,464.96
  4. Step 4: Simplify right side
    117,404.66x = 16,264,937,452.44
  5. Step 5: Solve for x
    x = 16,264,937,452.44/117,404.66
  6. Step 6: Final answer
    x = 138,537.41

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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.