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Finding the Fourth Proportional to 68,185.50, 102,250.90 and 40,112.92

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Solution

The fourth proportional to 68,185.50, 102,250.90 and 40,112.92 is: 60,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,185.50 : 102,250.90 = 40,112.92 : x
  2. Step 2: Convert to fraction form
    68,185.50/102,250.90 = 40,112.92/x
  3. Step 3: Cross multiply
    68,185.50x = 102,250.90 × 40,112.92
  4. Step 4: Simplify right side
    68,185.50x = 4,101,582,349.58
  5. Step 5: Solve for x
    x = 4,101,582,349.58/68,185.50
  6. Step 6: Final answer
    x = 60,153.30

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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.