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Finding the Fourth Proportional to 122,163.44, 183,216.44 and 68,878.40

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Solution

The fourth proportional to 122,163.44, 183,216.44 and 68,878.40 is: 103,301.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,163.44 : 183,216.44 = 68,878.40 : x
  2. Step 2: Convert to fraction form
    122,163.44/183,216.44 = 68,878.40/x
  3. Step 3: Cross multiply
    122,163.44x = 183,216.44 × 68,878.40
  4. Step 4: Simplify right side
    122,163.44x = 12,619,655,240.90
  5. Step 5: Solve for x
    x = 12,619,655,240.90/122,163.44
  6. Step 6: Final answer
    x = 103,301.41

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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.