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Finding the Fourth Proportional to 111,625.29, 167,051.78 and 68,913.18

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Solution

The fourth proportional to 111,625.29, 167,051.78 and 68,913.18 is: 103,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,625.29 : 167,051.78 = 68,913.18 : x
  2. Step 2: Convert to fraction form
    111,625.29/167,051.78 = 68,913.18/x
  3. Step 3: Cross multiply
    111,625.29x = 167,051.78 × 68,913.18
  4. Step 4: Simplify right side
    111,625.29x = 11,512,069,039.89
  5. Step 5: Solve for x
    x = 11,512,069,039.89/111,625.29
  6. Step 6: Final answer
    x = 103,131.37

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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.