Home / 136,930.14-188,956.86-76,488.78

Finding the Fourth Proportional to 136,930.14, 188,956.86 and 76,488.78

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Solution

The fourth proportional to 136,930.14, 188,956.86 and 76,488.78 is: 105,550.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,930.14 : 188,956.86 = 76,488.78 : x
  2. Step 2: Convert to fraction form
    136,930.14/188,956.86 = 76,488.78/x
  3. Step 3: Cross multiply
    136,930.14x = 188,956.86 × 76,488.78
  4. Step 4: Simplify right side
    136,930.14x = 14,453,079,694.03
  5. Step 5: Solve for x
    x = 14,453,079,694.03/136,930.14
  6. Step 6: Final answer
    x = 105,550.76

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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.