Home / 131,731.30-197,208.75-81,650.22

Finding the Fourth Proportional to 131,731.30, 197,208.75 and 81,650.22

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Solution

The fourth proportional to 131,731.30, 197,208.75 and 81,650.22 is: 122,234.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,731.30 : 197,208.75 = 81,650.22 : x
  2. Step 2: Convert to fraction form
    131,731.30/197,208.75 = 81,650.22/x
  3. Step 3: Cross multiply
    131,731.30x = 197,208.75 × 81,650.22
  4. Step 4: Simplify right side
    131,731.30x = 16,102,137,823.43
  5. Step 5: Solve for x
    x = 16,102,137,823.43/131,731.30
  6. Step 6: Final answer
    x = 122,234.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.