Home / 189,721.50-261,859.32-109,195.53

Finding the Fourth Proportional to 189,721.50, 261,859.32 and 109,195.53

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Solution

The fourth proportional to 189,721.50, 261,859.32 and 109,195.53 is: 150,714.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,721.50 : 261,859.32 = 109,195.53 : x
  2. Step 2: Convert to fraction form
    189,721.50/261,859.32 = 109,195.53/x
  3. Step 3: Cross multiply
    189,721.50x = 261,859.32 × 109,195.53
  4. Step 4: Simplify right side
    189,721.50x = 28,593,867,232.84
  5. Step 5: Solve for x
    x = 28,593,867,232.84/189,721.50
  6. Step 6: Final answer
    x = 150,714.95

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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.