Home / 189,786.54-261,878.67-108,116.94

Finding the Fourth Proportional to 189,786.54, 261,878.67 and 108,116.94

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Solution

The fourth proportional to 189,786.54, 261,878.67 and 108,116.94 is: 149,186.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,786.54 : 261,878.67 = 108,116.94 : x
  2. Step 2: Convert to fraction form
    189,786.54/261,878.67 = 108,116.94/x
  3. Step 3: Cross multiply
    189,786.54x = 261,878.67 × 108,116.94
  4. Step 4: Simplify right side
    189,786.54x = 28,313,520,451.67
  5. Step 5: Solve for x
    x = 28,313,520,451.67/189,786.54
  6. Step 6: Final answer
    x = 149,186.14

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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.