Home / 112,989.16-156,131.36-82,308.86

Finding the Fourth Proportional to 112,989.16, 156,131.36 and 82,308.86

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Solution

The fourth proportional to 112,989.16, 156,131.36 and 82,308.86 is: 113,736.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,989.16 : 156,131.36 = 82,308.86 : x
  2. Step 2: Convert to fraction form
    112,989.16/156,131.36 = 82,308.86/x
  3. Step 3: Cross multiply
    112,989.16x = 156,131.36 × 82,308.86
  4. Step 4: Simplify right side
    112,989.16x = 12,850,994,251.85
  5. Step 5: Solve for x
    x = 12,850,994,251.85/112,989.16
  6. Step 6: Final answer
    x = 113,736.52

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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.