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Finding the Fourth Proportional to 201,158.94, 301,739.13 and 68,040.30

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Solution

The fourth proportional to 201,158.94, 301,739.13 and 68,040.30 is: 102,060.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,158.94 : 301,739.13 = 68,040.30 : x
  2. Step 2: Convert to fraction form
    201,158.94/301,739.13 = 68,040.30/x
  3. Step 3: Cross multiply
    201,158.94x = 301,739.13 × 68,040.30
  4. Step 4: Simplify right side
    201,158.94x = 20,530,420,926.94
  5. Step 5: Solve for x
    x = 20,530,420,926.94/201,158.94
  6. Step 6: Final answer
    x = 102,060.69

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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.