Home / 190,387.21-262,735.92-105,505.69

Finding the Fourth Proportional to 190,387.21, 262,735.92 and 105,505.69

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Solution

The fourth proportional to 190,387.21, 262,735.92 and 105,505.69 is: 145,598.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,387.21 : 262,735.92 = 105,505.69 : x
  2. Step 2: Convert to fraction form
    190,387.21/262,735.92 = 105,505.69/x
  3. Step 3: Cross multiply
    190,387.21x = 262,735.92 × 105,505.69
  4. Step 4: Simplify right side
    190,387.21x = 27,720,134,527.38
  5. Step 5: Solve for x
    x = 27,720,134,527.38/190,387.21
  6. Step 6: Final answer
    x = 145,598.72

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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.