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Finding the Fourth Proportional to 117,871.66, 162,589.44 and 71,910.37

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Solution

The fourth proportional to 117,871.66, 162,589.44 and 71,910.37 is: 99,191.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,871.66 : 162,589.44 = 71,910.37 : x
  2. Step 2: Convert to fraction form
    117,871.66/162,589.44 = 71,910.37/x
  3. Step 3: Cross multiply
    117,871.66x = 162,589.44 × 71,910.37
  4. Step 4: Simplify right side
    117,871.66x = 11,691,866,788.49
  5. Step 5: Solve for x
    x = 11,691,866,788.49/117,871.66
  6. Step 6: Final answer
    x = 99,191.50

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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.