Home / 136,939.05-188,958.75-76,507.38

Finding the Fourth Proportional to 136,939.05, 188,958.75 and 76,507.38

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Solution

The fourth proportional to 136,939.05, 188,958.75 and 76,507.38 is: 105,570.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,939.05 : 188,958.75 = 76,507.38 : x
  2. Step 2: Convert to fraction form
    136,939.05/188,958.75 = 76,507.38/x
  3. Step 3: Cross multiply
    136,939.05x = 188,958.75 × 76,507.38
  4. Step 4: Simplify right side
    136,939.05x = 14,456,738,890.58
  5. Step 5: Solve for x
    x = 14,456,738,890.58/136,939.05
  6. Step 6: Final answer
    x = 105,570.61

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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.