Home / 142,761.31-197,028.09-82,331.93

Finding the Fourth Proportional to 142,761.31, 197,028.09 and 82,331.93

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Solution

The fourth proportional to 142,761.31, 197,028.09 and 82,331.93 is: 113,628.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,761.31 : 197,028.09 = 82,331.93 : x
  2. Step 2: Convert to fraction form
    142,761.31/197,028.09 = 82,331.93/x
  3. Step 3: Cross multiply
    142,761.31x = 197,028.09 × 82,331.93
  4. Step 4: Simplify right side
    142,761.31x = 16,221,703,406.48
  5. Step 5: Solve for x
    x = 16,221,703,406.48/142,761.31
  6. Step 6: Final answer
    x = 113,628.15

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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.