Home / 120,825.12-166,738.68-67,115.13

Finding the Fourth Proportional to 120,825.12, 166,738.68 and 67,115.13

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Solution

The fourth proportional to 120,825.12, 166,738.68 and 67,115.13 is: 92,618.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,825.12 : 166,738.68 = 67,115.13 : x
  2. Step 2: Convert to fraction form
    120,825.12/166,738.68 = 67,115.13/x
  3. Step 3: Cross multiply
    120,825.12x = 166,738.68 × 67,115.13
  4. Step 4: Simplify right side
    120,825.12x = 11,190,688,184.23
  5. Step 5: Solve for x
    x = 11,190,688,184.23/120,825.12
  6. Step 6: Final answer
    x = 92,618.89

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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.