Home / 131,911.56-197,932.30-61,778.76

Finding the Fourth Proportional to 131,911.56, 197,932.30 and 61,778.76

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Solution

The fourth proportional to 131,911.56, 197,932.30 and 61,778.76 is: 92,698.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,911.56 : 197,932.30 = 61,778.76 : x
  2. Step 2: Convert to fraction form
    131,911.56/197,932.30 = 61,778.76/x
  3. Step 3: Cross multiply
    131,911.56x = 197,932.30 × 61,778.76
  4. Step 4: Simplify right side
    131,911.56x = 12,228,012,057.95
  5. Step 5: Solve for x
    x = 12,228,012,057.95/131,911.56
  6. Step 6: Final answer
    x = 92,698.56

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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.