Home / 120,836.12-166,751.52-67,118.72

Finding the Fourth Proportional to 120,836.12, 166,751.52 and 67,118.72

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Solution

The fourth proportional to 120,836.12, 166,751.52 and 67,118.72 is: 92,622.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,836.12 : 166,751.52 = 67,118.72 : x
  2. Step 2: Convert to fraction form
    120,836.12/166,751.52 = 67,118.72/x
  3. Step 3: Cross multiply
    120,836.12x = 166,751.52 × 67,118.72
  4. Step 4: Simplify right side
    120,836.12x = 11,192,148,580.45
  5. Step 5: Solve for x
    x = 11,192,148,580.45/120,836.12
  6. Step 6: Final answer
    x = 92,622.54

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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.