Home / 190,256.27-285,387.19-90,426.65

Finding the Fourth Proportional to 190,256.27, 285,387.19 and 90,426.65

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Solution

The fourth proportional to 190,256.27, 285,387.19 and 90,426.65 is: 135,641.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,256.27 : 285,387.19 = 90,426.65 : x
  2. Step 2: Convert to fraction form
    190,256.27/285,387.19 = 90,426.65/x
  3. Step 3: Cross multiply
    190,256.27x = 285,387.19 × 90,426.65
  4. Step 4: Simplify right side
    190,256.27x = 25,806,605,891.61
  5. Step 5: Solve for x
    x = 25,806,605,891.61/190,256.27
  6. Step 6: Final answer
    x = 135,641.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.