Home / 190,644.68-263,121.20-105,789.08

Finding the Fourth Proportional to 190,644.68, 263,121.20 and 105,789.08

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Solution

The fourth proportional to 190,644.68, 263,121.20 and 105,789.08 is: 146,006.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,644.68 : 263,121.20 = 105,789.08 : x
  2. Step 2: Convert to fraction form
    190,644.68/263,121.20 = 105,789.08/x
  3. Step 3: Cross multiply
    190,644.68x = 263,121.20 × 105,789.08
  4. Step 4: Simplify right side
    190,644.68x = 27,835,349,676.50
  5. Step 5: Solve for x
    x = 27,835,349,676.50/190,644.68
  6. Step 6: Final answer
    x = 146,006.43

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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.