Home / 215,979.01-298,050.13-120,485.78

Finding the Fourth Proportional to 215,979.01, 298,050.13 and 120,485.78

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Solution

The fourth proportional to 215,979.01, 298,050.13 and 120,485.78 is: 166,269.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,979.01 : 298,050.13 = 120,485.78 : x
  2. Step 2: Convert to fraction form
    215,979.01/298,050.13 = 120,485.78/x
  3. Step 3: Cross multiply
    215,979.01x = 298,050.13 × 120,485.78
  4. Step 4: Simplify right side
    215,979.01x = 35,910,802,170.20
  5. Step 5: Solve for x
    x = 35,910,802,170.20/215,979.01
  6. Step 6: Final answer
    x = 166,269.87

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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.