Home / 189,683.22-261,759.78-103,640.37

Finding the Fourth Proportional to 189,683.22, 261,759.78 and 103,640.37

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Solution

The fourth proportional to 189,683.22, 261,759.78 and 103,640.37 is: 143,022.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,683.22 : 261,759.78 = 103,640.37 : x
  2. Step 2: Convert to fraction form
    189,683.22/261,759.78 = 103,640.37/x
  3. Step 3: Cross multiply
    189,683.22x = 261,759.78 × 103,640.37
  4. Step 4: Simplify right side
    189,683.22x = 27,128,880,450.32
  5. Step 5: Solve for x
    x = 27,128,880,450.32/189,683.22
  6. Step 6: Final answer
    x = 143,022.04

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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.