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Finding the Fourth Proportional to 101,136.80, 151,705.20 and 99,824.60

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Solution

The fourth proportional to 101,136.80, 151,705.20 and 99,824.60 is: 149,736.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,136.80 : 151,705.20 = 99,824.60 : x
  2. Step 2: Convert to fraction form
    101,136.80/151,705.20 = 99,824.60/x
  3. Step 3: Cross multiply
    101,136.80x = 151,705.20 × 99,824.60
  4. Step 4: Simplify right side
    101,136.80x = 15,143,910,907.92
  5. Step 5: Solve for x
    x = 15,143,910,907.92/101,136.80
  6. Step 6: Final answer
    x = 149,736.90

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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.