Home / 120,821.08-166,736.70-73,083.16

Finding the Fourth Proportional to 120,821.08, 166,736.70 and 73,083.16

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Solution

The fourth proportional to 120,821.08, 166,736.70 and 73,083.16 is: 100,856.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,821.08 : 166,736.70 = 73,083.16 : x
  2. Step 2: Convert to fraction form
    120,821.08/166,736.70 = 73,083.16/x
  3. Step 3: Cross multiply
    120,821.08x = 166,736.70 × 73,083.16
  4. Step 4: Simplify right side
    120,821.08x = 12,185,644,923.97
  5. Step 5: Solve for x
    x = 12,185,644,923.97/120,821.08
  6. Step 6: Final answer
    x = 100,856.94

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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.