Home / 190,408.25-262,763.39-105,530.78

Finding the Fourth Proportional to 190,408.25, 262,763.39 and 105,530.78

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Solution

The fourth proportional to 190,408.25, 262,763.39 and 105,530.78 is: 145,632.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,408.25 : 262,763.39 = 105,530.78 : x
  2. Step 2: Convert to fraction form
    190,408.25/262,763.39 = 105,530.78/x
  3. Step 3: Cross multiply
    190,408.25x = 262,763.39 × 105,530.78
  4. Step 4: Simplify right side
    190,408.25x = 27,729,624,974.49
  5. Step 5: Solve for x
    x = 27,729,624,974.49/190,408.25
  6. Step 6: Final answer
    x = 145,632.48

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1.5x scale

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.