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Finding the Fourth Proportional to 101,485.62, 152,111.79 and 68,165.46

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Solution

The fourth proportional to 101,485.62, 152,111.79 and 68,165.46 is: 102,169.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,485.62 : 152,111.79 = 68,165.46 : x
  2. Step 2: Convert to fraction form
    101,485.62/152,111.79 = 68,165.46/x
  3. Step 3: Cross multiply
    101,485.62x = 152,111.79 × 68,165.46
  4. Step 4: Simplify right side
    101,485.62x = 10,368,770,136.77
  5. Step 5: Solve for x
    x = 10,368,770,136.77/101,485.62
  6. Step 6: Final answer
    x = 102,169.85

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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.