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Finding the Fourth Proportional to 117,100.54, 161,601.88 and 71,144.54

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Solution

The fourth proportional to 117,100.54, 161,601.88 and 71,144.54 is: 98,181.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,100.54 : 161,601.88 = 71,144.54 : x
  2. Step 2: Convert to fraction form
    117,100.54/161,601.88 = 71,144.54/x
  3. Step 3: Cross multiply
    117,100.54x = 161,601.88 × 71,144.54
  4. Step 4: Simplify right side
    117,100.54x = 11,497,091,415.74
  5. Step 5: Solve for x
    x = 11,497,091,415.74/117,100.54
  6. Step 6: Final answer
    x = 98,181.37

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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.