Home / 120,530.98-166,321.57-66,811.43

Finding the Fourth Proportional to 120,530.98, 166,321.57 and 66,811.43

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Solution

The fourth proportional to 120,530.98, 166,321.57 and 66,811.43 is: 92,193.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,530.98 : 166,321.57 = 66,811.43 : x
  2. Step 2: Convert to fraction form
    120,530.98/166,321.57 = 66,811.43/x
  3. Step 3: Cross multiply
    120,530.98x = 166,321.57 × 66,811.43
  4. Step 4: Simplify right side
    120,530.98x = 11,112,180,932.91
  5. Step 5: Solve for x
    x = 11,112,180,932.91/120,530.98
  6. Step 6: Final answer
    x = 92,193.57

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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.