Home / 190,408.26-262,763.38-105,530.78

Finding the Fourth Proportional to 190,408.26, 262,763.38 and 105,530.78

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Solution

The fourth proportional to 190,408.26, 262,763.38 and 105,530.78 is: 145,632.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,408.26 : 262,763.38 = 105,530.78 : x
  2. Step 2: Convert to fraction form
    190,408.26/262,763.38 = 105,530.78/x
  3. Step 3: Cross multiply
    190,408.26x = 262,763.38 × 105,530.78
  4. Step 4: Simplify right side
    190,408.26x = 27,729,624,446.84
  5. Step 5: Solve for x
    x = 27,729,624,446.84/190,408.26
  6. Step 6: Final answer
    x = 145,632.47

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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.