Home / 189,356.09-261,324.20-108,815.72

Finding the Fourth Proportional to 189,356.09, 261,324.20 and 108,815.72

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Solution

The fourth proportional to 189,356.09, 261,324.20 and 108,815.72 is: 150,173.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,356.09 : 261,324.20 = 108,815.72 : x
  2. Step 2: Convert to fraction form
    189,356.09/261,324.20 = 108,815.72/x
  3. Step 3: Cross multiply
    189,356.09x = 261,324.20 × 108,815.72
  4. Step 4: Simplify right side
    189,356.09x = 28,436,179,941.84
  5. Step 5: Solve for x
    x = 28,436,179,941.84/189,356.09
  6. Step 6: Final answer
    x = 150,173.05

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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.