Home / 143,383.68-197,864.31-78,852.36

Finding the Fourth Proportional to 143,383.68, 197,864.31 and 78,852.36

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Solution

The fourth proportional to 143,383.68, 197,864.31 and 78,852.36 is: 108,813.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,383.68 : 197,864.31 = 78,852.36 : x
  2. Step 2: Convert to fraction form
    143,383.68/197,864.31 = 78,852.36/x
  3. Step 3: Cross multiply
    143,383.68x = 197,864.31 × 78,852.36
  4. Step 4: Simplify right side
    143,383.68x = 15,602,067,803.27
  5. Step 5: Solve for x
    x = 15,602,067,803.27/143,383.68
  6. Step 6: Final answer
    x = 108,813.41

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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.