Home / 156,515.22-215,919.27-92,829.78

Finding the Fourth Proportional to 156,515.22, 215,919.27 and 92,829.78

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Solution

The fourth proportional to 156,515.22, 215,919.27 and 92,829.78 is: 128,062.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,515.22 : 215,919.27 = 92,829.78 : x
  2. Step 2: Convert to fraction form
    156,515.22/215,919.27 = 92,829.78/x
  3. Step 3: Cross multiply
    156,515.22x = 215,919.27 × 92,829.78
  4. Step 4: Simplify right side
    156,515.22x = 20,043,738,331.86
  5. Step 5: Solve for x
    x = 20,043,738,331.86/156,515.22
  6. Step 6: Final answer
    x = 128,062.55

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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.