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Finding the Fourth Proportional to 68,120.82, 102,198.51 and 21,374.10

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Solution

The fourth proportional to 68,120.82, 102,198.51 and 21,374.10 is: 32,066.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,120.82 : 102,198.51 = 21,374.10 : x
  2. Step 2: Convert to fraction form
    68,120.82/102,198.51 = 21,374.10/x
  3. Step 3: Cross multiply
    68,120.82x = 102,198.51 × 21,374.10
  4. Step 4: Simplify right side
    68,120.82x = 2,184,401,172.59
  5. Step 5: Solve for x
    x = 2,184,401,172.59/68,120.82
  6. Step 6: Final answer
    x = 32,066.57

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1.5x scale

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.