Home / 136,926.20-188,939.46-76,489.38

Finding the Fourth Proportional to 136,926.20, 188,939.46 and 76,489.38

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Solution

The fourth proportional to 136,926.20, 188,939.46 and 76,489.38 is: 105,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,926.20 : 188,939.46 = 76,489.38 : x
  2. Step 2: Convert to fraction form
    136,926.20/188,939.46 = 76,489.38/x
  3. Step 3: Cross multiply
    136,926.20x = 188,939.46 × 76,489.38
  4. Step 4: Simplify right side
    136,926.20x = 14,451,862,152.93
  5. Step 5: Solve for x
    x = 14,451,862,152.93/136,926.20
  6. Step 6: Final answer
    x = 105,544.90

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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.