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Finding the Fourth Proportional to 131,935.20, 197,611.20 and 53,008.80

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Solution

The fourth proportional to 131,935.20, 197,611.20 and 53,008.80 is: 79,396.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,935.20 : 197,611.20 = 53,008.80 : x
  2. Step 2: Convert to fraction form
    131,935.20/197,611.20 = 53,008.80/x
  3. Step 3: Cross multiply
    131,935.20x = 197,611.20 × 53,008.80
  4. Step 4: Simplify right side
    131,935.20x = 10,475,132,578.56
  5. Step 5: Solve for x
    x = 10,475,132,578.56/131,935.20
  6. Step 6: Final answer
    x = 79,396.04

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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.