Home / 189,981.21-262,172.10-103,939.38

Finding the Fourth Proportional to 189,981.21, 262,172.10 and 103,939.38

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Solution

The fourth proportional to 189,981.21, 262,172.10 and 103,939.38 is: 143,435.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,981.21 : 262,172.10 = 103,939.38 : x
  2. Step 2: Convert to fraction form
    189,981.21/262,172.10 = 103,939.38/x
  3. Step 3: Cross multiply
    189,981.21x = 262,172.10 × 103,939.38
  4. Step 4: Simplify right side
    189,981.21x = 27,250,005,527.30
  5. Step 5: Solve for x
    x = 27,250,005,527.30/189,981.21
  6. Step 6: Final answer
    x = 143,435.27

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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.