Home / 189,924.57-262,128.20-109,398.78

Finding the Fourth Proportional to 189,924.57, 262,128.20 and 109,398.78

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Solution

The fourth proportional to 189,924.57, 262,128.20 and 109,398.78 is: 150,988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,924.57 : 262,128.20 = 109,398.78 : x
  2. Step 2: Convert to fraction form
    189,924.57/262,128.20 = 109,398.78/x
  3. Step 3: Cross multiply
    189,924.57x = 262,128.20 × 109,398.78
  4. Step 4: Simplify right side
    189,924.57x = 28,676,504,736.60
  5. Step 5: Solve for x
    x = 28,676,504,736.60/189,924.57
  6. Step 6: Final answer
    x = 150,988.91

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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.