Home / 104,120.14-143,546.83-78,168.82

Finding the Fourth Proportional to 104,120.14, 143,546.83 and 78,168.82

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Solution

The fourth proportional to 104,120.14, 143,546.83 and 78,168.82 is: 107,768.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,120.14 : 143,546.83 = 78,168.82 : x
  2. Step 2: Convert to fraction form
    104,120.14/143,546.83 = 78,168.82/x
  3. Step 3: Cross multiply
    104,120.14x = 143,546.83 × 78,168.82
  4. Step 4: Simplify right side
    104,120.14x = 11,220,886,315.84
  5. Step 5: Solve for x
    x = 11,220,886,315.84/104,120.14
  6. Step 6: Final answer
    x = 107,768.64

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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.