Home / 120,901.49-166,840.72-67,185.12

Finding the Fourth Proportional to 120,901.49, 166,840.72 and 67,185.12

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Solution

The fourth proportional to 120,901.49, 166,840.72 and 67,185.12 is: 92,713.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,901.49 : 166,840.72 = 67,185.12 : x
  2. Step 2: Convert to fraction form
    120,901.49/166,840.72 = 67,185.12/x
  3. Step 3: Cross multiply
    120,901.49x = 166,840.72 × 67,185.12
  4. Step 4: Simplify right side
    120,901.49x = 11,209,213,794.09
  5. Step 5: Solve for x
    x = 11,209,213,794.09/120,901.49
  6. Step 6: Final answer
    x = 92,713.61

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1.5x scale

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.