Home / 109,409.32-150,838.63-82,069.18

Finding the Fourth Proportional to 109,409.32, 150,838.63 and 82,069.18

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Solution

The fourth proportional to 109,409.32, 150,838.63 and 82,069.18 is: 113,145.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,409.32 : 150,838.63 = 82,069.18 : x
  2. Step 2: Convert to fraction form
    109,409.32/150,838.63 = 82,069.18/x
  3. Step 3: Cross multiply
    109,409.32x = 150,838.63 × 82,069.18
  4. Step 4: Simplify right side
    109,409.32x = 12,379,202,942.62
  5. Step 5: Solve for x
    x = 12,379,202,942.62/109,409.32
  6. Step 6: Final answer
    x = 113,145.79

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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.