Home / 143,414.64-197,917.08-78,886.62

Finding the Fourth Proportional to 143,414.64, 197,917.08 and 78,886.62

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Solution

The fourth proportional to 143,414.64, 197,917.08 and 78,886.62 is: 108,866.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,414.64 : 197,917.08 = 78,886.62 : x
  2. Step 2: Convert to fraction form
    143,414.64/197,917.08 = 78,886.62/x
  3. Step 3: Cross multiply
    143,414.64x = 197,917.08 × 78,886.62
  4. Step 4: Simplify right side
    143,414.64x = 15,613,009,481.47
  5. Step 5: Solve for x
    x = 15,613,009,481.47/143,414.64
  6. Step 6: Final answer
    x = 108,866.22

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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.