Home / 156,439.44-215,885.12-88,469.78

Finding the Fourth Proportional to 156,439.44, 215,885.12 and 88,469.78

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Solution

The fourth proportional to 156,439.44, 215,885.12 and 88,469.78 is: 122,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,439.44 : 215,885.12 = 88,469.78 : x
  2. Step 2: Convert to fraction form
    156,439.44/215,885.12 = 88,469.78/x
  3. Step 3: Cross multiply
    156,439.44x = 215,885.12 × 88,469.78
  4. Step 4: Simplify right side
    156,439.44x = 19,099,307,549.90
  5. Step 5: Solve for x
    x = 19,099,307,549.90/156,439.44
  6. Step 6: Final answer
    x = 122,087.55

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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.