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Finding the Fourth Proportional to 131,018.80, 196,614.60 and 47,912.80

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Solution

The fourth proportional to 131,018.80, 196,614.60 and 47,912.80 is: 71,900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,018.80 : 196,614.60 = 47,912.80 : x
  2. Step 2: Convert to fraction form
    131,018.80/196,614.60 = 47,912.80/x
  3. Step 3: Cross multiply
    131,018.80x = 196,614.60 × 47,912.80
  4. Step 4: Simplify right side
    131,018.80x = 9,420,356,006.88
  5. Step 5: Solve for x
    x = 9,420,356,006.88/131,018.80
  6. Step 6: Final answer
    x = 71,900.80

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1.5x scale

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.