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Finding the Fourth Proportional to 110,628, 152,678.16 and 68,185.44

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Solution

The fourth proportional to 110,628, 152,678.16 and 68,185.44 is: 94,103.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,628 : 152,678.16 = 68,185.44 : x
  2. Step 2: Convert to fraction form
    110,628/152,678.16 = 68,185.44/x
  3. Step 3: Cross multiply
    110,628x = 152,678.16 × 68,185.44
  4. Step 4: Simplify right side
    110,628x = 10,410,427,517.99
  5. Step 5: Solve for x
    x = 10,410,427,517.99/110,628
  6. Step 6: Final answer
    x = 94,103.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.