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Finding the Fourth Proportional to 131,169.20, 196,462.20 and 101,490.80

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Solution

The fourth proportional to 131,169.20, 196,462.20 and 101,490.80 is: 152,010.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,169.20 : 196,462.20 = 101,490.80 : x
  2. Step 2: Convert to fraction form
    131,169.20/196,462.20 = 101,490.80/x
  3. Step 3: Cross multiply
    131,169.20x = 196,462.20 × 101,490.80
  4. Step 4: Simplify right side
    131,169.20x = 19,939,105,847.76
  5. Step 5: Solve for x
    x = 19,939,105,847.76/131,169.20
  6. Step 6: Final answer
    x = 152,010.58

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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.