Home / 190,065.28-262,286.40-105,180.80

Finding the Fourth Proportional to 190,065.28, 262,286.40 and 105,180.80

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Solution

The fourth proportional to 190,065.28, 262,286.40 and 105,180.80 is: 145,147.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,065.28 : 262,286.40 = 105,180.80 : x
  2. Step 2: Convert to fraction form
    190,065.28/262,286.40 = 105,180.80/x
  3. Step 3: Cross multiply
    190,065.28x = 262,286.40 × 105,180.80
  4. Step 4: Simplify right side
    190,065.28x = 27,587,493,381.12
  5. Step 5: Solve for x
    x = 27,587,493,381.12/190,065.28
  6. Step 6: Final answer
    x = 145,147.46

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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.