Home / 136,989.11-189,103.19-83,291.29

Finding the Fourth Proportional to 136,989.11, 189,103.19 and 83,291.29

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Solution

The fourth proportional to 136,989.11, 189,103.19 and 83,291.29 is: 114,977.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,989.11 : 189,103.19 = 83,291.29 : x
  2. Step 2: Convert to fraction form
    136,989.11/189,103.19 = 83,291.29/x
  3. Step 3: Cross multiply
    136,989.11x = 189,103.19 × 83,291.29
  4. Step 4: Simplify right side
    136,989.11x = 15,750,647,749.00
  5. Step 5: Solve for x
    x = 15,750,647,749.00/136,989.11
  6. Step 6: Final answer
    x = 114,977.37

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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.