Home / 189,787.54-261,880.04-108,117.94

Finding the Fourth Proportional to 189,787.54, 261,880.04 and 108,117.94

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Solution

The fourth proportional to 189,787.54, 261,880.04 and 108,117.94 is: 149,187.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,787.54 : 261,880.04 = 108,117.94 : x
  2. Step 2: Convert to fraction form
    189,787.54/261,880.04 = 108,117.94/x
  3. Step 3: Cross multiply
    189,787.54x = 261,880.04 × 108,117.94
  4. Step 4: Simplify right side
    189,787.54x = 28,313,930,451.92
  5. Step 5: Solve for x
    x = 28,313,930,451.92/189,787.54
  6. Step 6: Final answer
    x = 149,187.51

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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.