Home / 215,999.12-298,078.97-120,505.84

Finding the Fourth Proportional to 215,999.12, 298,078.97 and 120,505.84

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Solution

The fourth proportional to 215,999.12, 298,078.97 and 120,505.84 is: 166,298.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,999.12 : 298,078.97 = 120,505.84 : x
  2. Step 2: Convert to fraction form
    215,999.12/298,078.97 = 120,505.84/x
  3. Step 3: Cross multiply
    215,999.12x = 298,078.97 × 120,505.84
  4. Step 4: Simplify right side
    215,999.12x = 35,920,255,175.79
  5. Step 5: Solve for x
    x = 35,920,255,175.79/215,999.12
  6. Step 6: Final answer
    x = 166,298.16

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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.