Home / 131,828.98-197,741.82-31,990

Finding the Fourth Proportional to 131,828.98, 197,741.82 and 31,990

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Solution

The fourth proportional to 131,828.98, 197,741.82 and 31,990 is: 47,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,828.98 : 197,741.82 = 31,990 : x
  2. Step 2: Convert to fraction form
    131,828.98/197,741.82 = 31,990/x
  3. Step 3: Cross multiply
    131,828.98x = 197,741.82 × 31,990
  4. Step 4: Simplify right side
    131,828.98x = 6,325,760,821.80
  5. Step 5: Solve for x
    x = 6,325,760,821.80/131,828.98
  6. Step 6: Final answer
    x = 47,984.60

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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.