Home / 120,642.12-166,487.13-66,930.62

Finding the Fourth Proportional to 120,642.12, 166,487.13 and 66,930.62

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Solution

The fourth proportional to 120,642.12, 166,487.13 and 66,930.62 is: 92,364.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,642.12 : 166,487.13 = 66,930.62 : x
  2. Step 2: Convert to fraction form
    120,642.12/166,487.13 = 66,930.62/x
  3. Step 3: Cross multiply
    120,642.12x = 166,487.13 × 66,930.62
  4. Step 4: Simplify right side
    120,642.12x = 11,143,086,000.49
  5. Step 5: Solve for x
    x = 11,143,086,000.49/120,642.12
  6. Step 6: Final answer
    x = 92,364.81

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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.