Home / 156,983.15-216,630.82-85,360.70

Finding the Fourth Proportional to 156,983.15, 216,630.82 and 85,360.70

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Solution

The fourth proportional to 156,983.15, 216,630.82 and 85,360.70 is: 117,794.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,983.15 : 216,630.82 = 85,360.70 : x
  2. Step 2: Convert to fraction form
    156,983.15/216,630.82 = 85,360.70/x
  3. Step 3: Cross multiply
    156,983.15x = 216,630.82 × 85,360.70
  4. Step 4: Simplify right side
    156,983.15x = 18,491,758,436.77
  5. Step 5: Solve for x
    x = 18,491,758,436.77/156,983.15
  6. Step 6: Final answer
    x = 117,794.54

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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.