Home / 143,037.36-197,394.06-78,512.64

Finding the Fourth Proportional to 143,037.36, 197,394.06 and 78,512.64

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Solution

The fourth proportional to 143,037.36, 197,394.06 and 78,512.64 is: 108,348.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,037.36 : 197,394.06 = 78,512.64 : x
  2. Step 2: Convert to fraction form
    143,037.36/197,394.06 = 78,512.64/x
  3. Step 3: Cross multiply
    143,037.36x = 197,394.06 × 78,512.64
  4. Step 4: Simplify right side
    143,037.36x = 15,497,928,770.92
  5. Step 5: Solve for x
    x = 15,497,928,770.92/143,037.36
  6. Step 6: Final answer
    x = 108,348.82

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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.