Home / 143,407.32-197,906.88-78,879.28

Finding the Fourth Proportional to 143,407.32, 197,906.88 and 78,879.28

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Solution

The fourth proportional to 143,407.32, 197,906.88 and 78,879.28 is: 108,856.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,407.32 : 197,906.88 = 78,879.28 : x
  2. Step 2: Convert to fraction form
    143,407.32/197,906.88 = 78,879.28/x
  3. Step 3: Cross multiply
    143,407.32x = 197,906.88 × 78,879.28
  4. Step 4: Simplify right side
    143,407.32x = 15,610,752,201.45
  5. Step 5: Solve for x
    x = 15,610,752,201.45/143,407.32
  6. Step 6: Final answer
    x = 108,856.03

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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.