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Finding the Fourth Proportional to 117,027.95, 161,517.89 and 71,731.13

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Solution

The fourth proportional to 117,027.95, 161,517.89 and 71,731.13 is: 99,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,027.95 : 161,517.89 = 71,731.13 : x
  2. Step 2: Convert to fraction form
    117,027.95/161,517.89 = 71,731.13/x
  3. Step 3: Cross multiply
    117,027.95x = 161,517.89 × 71,731.13
  4. Step 4: Simplify right side
    117,027.95x = 11,585,860,764.92
  5. Step 5: Solve for x
    x = 11,585,860,764.92/117,027.95
  6. Step 6: Final answer
    x = 99,000.80

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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.