Home / 136,236.96-188,005.20-76,620.96

Finding the Fourth Proportional to 136,236.96, 188,005.20 and 76,620.96

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Solution

The fourth proportional to 136,236.96, 188,005.20 and 76,620.96 is: 105,735.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,236.96 : 188,005.20 = 76,620.96 : x
  2. Step 2: Convert to fraction form
    136,236.96/188,005.20 = 76,620.96/x
  3. Step 3: Cross multiply
    136,236.96x = 188,005.20 × 76,620.96
  4. Step 4: Simplify right side
    136,236.96x = 14,405,138,908.99
  5. Step 5: Solve for x
    x = 14,405,138,908.99/136,236.96
  6. Step 6: Final answer
    x = 105,735.91

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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.