Home / 120,606.30-166,435.11-66,891.42

Finding the Fourth Proportional to 120,606.30, 166,435.11 and 66,891.42

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Solution

The fourth proportional to 120,606.30, 166,435.11 and 66,891.42 is: 92,309.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,606.30 : 166,435.11 = 66,891.42 : x
  2. Step 2: Convert to fraction form
    120,606.30/166,435.11 = 66,891.42/x
  3. Step 3: Cross multiply
    120,606.30x = 166,435.11 × 66,891.42
  4. Step 4: Simplify right side
    120,606.30x = 11,133,080,845.76
  5. Step 5: Solve for x
    x = 11,133,080,845.76/120,606.30
  6. Step 6: Final answer
    x = 92,309.28

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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.