Home / 111,170.29-153,415.97-65,850.85

Finding the Fourth Proportional to 111,170.29, 153,415.97 and 65,850.85

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Solution

The fourth proportional to 111,170.29, 153,415.97 and 65,850.85 is: 90,874.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,170.29 : 153,415.97 = 65,850.85 : x
  2. Step 2: Convert to fraction form
    111,170.29/153,415.97 = 65,850.85/x
  3. Step 3: Cross multiply
    111,170.29x = 153,415.97 × 65,850.85
  4. Step 4: Simplify right side
    111,170.29x = 10,102,571,425.62
  5. Step 5: Solve for x
    x = 10,102,571,425.62/111,170.29
  6. Step 6: Final answer
    x = 90,874.75

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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.