Home / 120,606.49-166,435.86-66,891.61

Finding the Fourth Proportional to 120,606.49, 166,435.86 and 66,891.61

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Solution

The fourth proportional to 120,606.49, 166,435.86 and 66,891.61 is: 92,309.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,606.49 : 166,435.86 = 66,891.61 : x
  2. Step 2: Convert to fraction form
    120,606.49/166,435.86 = 66,891.61/x
  3. Step 3: Cross multiply
    120,606.49x = 166,435.86 × 66,891.61
  4. Step 4: Simplify right side
    120,606.49x = 11,133,162,637.13
  5. Step 5: Solve for x
    x = 11,133,162,637.13/120,606.49
  6. Step 6: Final answer
    x = 92,309.81

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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.