Home / 112,991.16-156,134.12-82,310.86

Finding the Fourth Proportional to 112,991.16, 156,134.12 and 82,310.86

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Solution

The fourth proportional to 112,991.16, 156,134.12 and 82,310.86 is: 113,739.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,991.16 : 156,134.12 = 82,310.86 : x
  2. Step 2: Convert to fraction form
    112,991.16/156,134.12 = 82,310.86/x
  3. Step 3: Cross multiply
    112,991.16x = 156,134.12 × 82,310.86
  4. Step 4: Simplify right side
    112,991.16x = 12,851,533,692.54
  5. Step 5: Solve for x
    x = 12,851,533,692.54/112,991.16
  6. Step 6: Final answer
    x = 113,739.28

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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.