Home / 120,382.72-166,121.04-66,664.72

Finding the Fourth Proportional to 120,382.72, 166,121.04 and 66,664.72

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Solution

The fourth proportional to 120,382.72, 166,121.04 and 66,664.72 is: 91,993.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,382.72 : 166,121.04 = 66,664.72 : x
  2. Step 2: Convert to fraction form
    120,382.72/166,121.04 = 66,664.72/x
  3. Step 3: Cross multiply
    120,382.72x = 166,121.04 × 66,664.72
  4. Step 4: Simplify right side
    120,382.72x = 11,074,412,617.71
  5. Step 5: Solve for x
    x = 11,074,412,617.71/120,382.72
  6. Step 6: Final answer
    x = 91,993.37

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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.