Home / 190,105.54-262,342.47-105,220.78

Finding the Fourth Proportional to 190,105.54, 262,342.47 and 105,220.78

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Solution

The fourth proportional to 190,105.54, 262,342.47 and 105,220.78 is: 145,202.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,105.54 : 262,342.47 = 105,220.78 : x
  2. Step 2: Convert to fraction form
    190,105.54/262,342.47 = 105,220.78/x
  3. Step 3: Cross multiply
    190,105.54x = 262,342.47 × 105,220.78
  4. Step 4: Simplify right side
    190,105.54x = 27,603,879,320.53
  5. Step 5: Solve for x
    x = 27,603,879,320.53/190,105.54
  6. Step 6: Final answer
    x = 145,202.92

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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.