Home / 215,999.16-298,078.08-120,505.80

Finding the Fourth Proportional to 215,999.16, 298,078.08 and 120,505.80

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Solution

The fourth proportional to 215,999.16, 298,078.08 and 120,505.80 is: 166,297.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,999.16 : 298,078.08 = 120,505.80 : x
  2. Step 2: Convert to fraction form
    215,999.16/298,078.08 = 120,505.80/x
  3. Step 3: Cross multiply
    215,999.16x = 298,078.08 × 120,505.80
  4. Step 4: Simplify right side
    215,999.16x = 35,920,137,492.86
  5. Step 5: Solve for x
    x = 35,920,137,492.86/215,999.16
  6. Step 6: Final answer
    x = 166,297.58

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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.