Home / 190,170.15-262,452.41-105,287.21

Finding the Fourth Proportional to 190,170.15, 262,452.41 and 105,287.21

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Solution

The fourth proportional to 190,170.15, 262,452.41 and 105,287.21 is: 145,306.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,170.15 : 262,452.41 = 105,287.21 : x
  2. Step 2: Convert to fraction form
    190,170.15/262,452.41 = 105,287.21/x
  3. Step 3: Cross multiply
    190,170.15x = 262,452.41 × 105,287.21
  4. Step 4: Simplify right side
    190,170.15x = 27,632,882,006.68
  5. Step 5: Solve for x
    x = 27,632,882,006.68/190,170.15
  6. Step 6: Final answer
    x = 145,306.10

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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.