Home / 101,786.78-140,450.46-58,176.20

Finding the Fourth Proportional to 101,786.78, 140,450.46 and 58,176.20

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Solution

The fourth proportional to 101,786.78, 140,450.46 and 58,176.20 is: 80,274.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,786.78 : 140,450.46 = 58,176.20 : x
  2. Step 2: Convert to fraction form
    101,786.78/140,450.46 = 58,176.20/x
  3. Step 3: Cross multiply
    101,786.78x = 140,450.46 × 58,176.20
  4. Step 4: Simplify right side
    101,786.78x = 8,170,874,051.05
  5. Step 5: Solve for x
    x = 8,170,874,051.05/101,786.78
  6. Step 6: Final answer
    x = 80,274.41

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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.