Home / 120,736.16-166,608-67,018.56

Finding the Fourth Proportional to 120,736.16, 166,608 and 67,018.56

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Solution

The fourth proportional to 120,736.16, 166,608 and 67,018.56 is: 92,481.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,736.16 : 166,608 = 67,018.56 : x
  2. Step 2: Convert to fraction form
    120,736.16/166,608 = 67,018.56/x
  3. Step 3: Cross multiply
    120,736.16x = 166,608 × 67,018.56
  4. Step 4: Simplify right side
    120,736.16x = 11,165,828,244.48
  5. Step 5: Solve for x
    x = 11,165,828,244.48/120,736.16
  6. Step 6: Final answer
    x = 92,481.23

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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.