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Finding the Fourth Proportional to 82,075.60, 122,940.60 and 68,251.60

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Solution

The fourth proportional to 82,075.60, 122,940.60 and 68,251.60 is: 102,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,075.60 : 122,940.60 = 68,251.60 : x
  2. Step 2: Convert to fraction form
    82,075.60/122,940.60 = 68,251.60/x
  3. Step 3: Cross multiply
    82,075.60x = 122,940.60 × 68,251.60
  4. Step 4: Simplify right side
    82,075.60x = 8,390,892,654.96
  5. Step 5: Solve for x
    x = 8,390,892,654.96/82,075.60
  6. Step 6: Final answer
    x = 102,233.70

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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.