Home / 190,104.54-262,341.09-105,219.78

Finding the Fourth Proportional to 190,104.54, 262,341.09 and 105,219.78

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Solution

The fourth proportional to 190,104.54, 262,341.09 and 105,219.78 is: 145,201.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,104.54 : 262,341.09 = 105,219.78 : x
  2. Step 2: Convert to fraction form
    190,104.54/262,341.09 = 105,219.78/x
  3. Step 3: Cross multiply
    190,104.54x = 262,341.09 × 105,219.78
  4. Step 4: Simplify right side
    190,104.54x = 27,603,471,774.76
  5. Step 5: Solve for x
    x = 27,603,471,774.76/190,104.54
  6. Step 6: Final answer
    x = 145,201.54

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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.