Home / 189,696.28-261,806.16-109,121.80

Finding the Fourth Proportional to 189,696.28, 261,806.16 and 109,121.80

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Solution

The fourth proportional to 189,696.28, 261,806.16 and 109,121.80 is: 150,602.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,696.28 : 261,806.16 = 109,121.80 : x
  2. Step 2: Convert to fraction form
    189,696.28/261,806.16 = 109,121.80/x
  3. Step 3: Cross multiply
    189,696.28x = 261,806.16 × 109,121.80
  4. Step 4: Simplify right side
    189,696.28x = 28,568,759,430.29
  5. Step 5: Solve for x
    x = 28,568,759,430.29/189,696.28
  6. Step 6: Final answer
    x = 150,602.63

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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.