Home / 120,664.15-166,540.76-69,685.18

Finding the Fourth Proportional to 120,664.15, 166,540.76 and 69,685.18

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Solution

The fourth proportional to 120,664.15, 166,540.76 and 69,685.18 is: 96,179.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,664.15 : 166,540.76 = 69,685.18 : x
  2. Step 2: Convert to fraction form
    120,664.15/166,540.76 = 69,685.18/x
  3. Step 3: Cross multiply
    120,664.15x = 166,540.76 × 69,685.18
  4. Step 4: Simplify right side
    120,664.15x = 11,605,422,837.94
  5. Step 5: Solve for x
    x = 11,605,422,837.94/120,664.15
  6. Step 6: Final answer
    x = 96,179.54

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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.