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Finding the Fourth Proportional to 136,893.37, 188,910.84 and 76,464.85

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Solution

The fourth proportional to 136,893.37, 188,910.84 and 76,464.85 is: 105,520.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,893.37 : 188,910.84 = 76,464.85 : x
  2. Step 2: Convert to fraction form
    136,893.37/188,910.84 = 76,464.85/x
  3. Step 3: Cross multiply
    136,893.37x = 188,910.84 × 76,464.85
  4. Step 4: Simplify right side
    136,893.37x = 14,445,039,043.97
  5. Step 5: Solve for x
    x = 14,445,039,043.97/136,893.37
  6. Step 6: Final answer
    x = 105,520.37

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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.