Home / 143,187.36-197,587-82,761.92

Finding the Fourth Proportional to 143,187.36, 197,587 and 82,761.92

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Solution

The fourth proportional to 143,187.36, 197,587 and 82,761.92 is: 114,204.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,187.36 : 197,587 = 82,761.92 : x
  2. Step 2: Convert to fraction form
    143,187.36/197,587 = 82,761.92/x
  3. Step 3: Cross multiply
    143,187.36x = 197,587 × 82,761.92
  4. Step 4: Simplify right side
    143,187.36x = 16,352,679,487.04
  5. Step 5: Solve for x
    x = 16,352,679,487.04/143,187.36
  6. Step 6: Final answer
    x = 114,204.77

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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.