Home / 68,114.98-102,172.35-21,367.78

Finding the Fourth Proportional to 68,114.98, 102,172.35 and 21,367.78

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Solution

The fourth proportional to 68,114.98, 102,172.35 and 21,367.78 is: 32,051.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,114.98 : 102,172.35 = 21,367.78 : x
  2. Step 2: Convert to fraction form
    68,114.98/102,172.35 = 21,367.78/x
  3. Step 3: Cross multiply
    68,114.98x = 102,172.35 × 21,367.78
  4. Step 4: Simplify right side
    68,114.98x = 2,183,196,296.88
  5. Step 5: Solve for x
    x = 2,183,196,296.88/68,114.98
  6. Step 6: Final answer
    x = 32,051.63

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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.