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Finding the Fourth Proportional to 68,104.75, 102,157.13 and 18,856.75

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Solution

The fourth proportional to 68,104.75, 102,157.13 and 18,856.75 is: 28,285.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,104.75 : 102,157.13 = 18,856.75 : x
  2. Step 2: Convert to fraction form
    68,104.75/102,157.13 = 18,856.75/x
  3. Step 3: Cross multiply
    68,104.75x = 102,157.13 × 18,856.75
  4. Step 4: Simplify right side
    68,104.75x = 1,926,351,461.13
  5. Step 5: Solve for x
    x = 1,926,351,461.13/68,104.75
  6. Step 6: Final answer
    x = 28,285.13

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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.