Home / 131,391.12-197,083.32-36,620.88

Finding the Fourth Proportional to 131,391.12, 197,083.32 and 36,620.88

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Solution

The fourth proportional to 131,391.12, 197,083.32 and 36,620.88 is: 54,930.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,391.12 : 197,083.32 = 36,620.88 : x
  2. Step 2: Convert to fraction form
    131,391.12/197,083.32 = 36,620.88/x
  3. Step 3: Cross multiply
    131,391.12x = 197,083.32 × 36,620.88
  4. Step 4: Simplify right side
    131,391.12x = 7,217,364,611.72
  5. Step 5: Solve for x
    x = 7,217,364,611.72/131,391.12
  6. Step 6: Final answer
    x = 54,930.38

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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.