Home / 190,811.40-285,972.30-106,571.40

Finding the Fourth Proportional to 190,811.40, 285,972.30 and 106,571.40

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Solution

The fourth proportional to 190,811.40, 285,972.30 and 106,571.40 is: 159,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,811.40 : 285,972.30 = 106,571.40 : x
  2. Step 2: Convert to fraction form
    190,811.40/285,972.30 = 106,571.40/x
  3. Step 3: Cross multiply
    190,811.40x = 285,972.30 × 106,571.40
  4. Step 4: Simplify right side
    190,811.40x = 30,476,468,372.22
  5. Step 5: Solve for x
    x = 30,476,468,372.22/190,811.40
  6. Step 6: Final answer
    x = 159,720.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.