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Finding the Fourth Proportional to 82,034.20, 123,051.30 and 68,912.20

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Solution

The fourth proportional to 82,034.20, 123,051.30 and 68,912.20 is: 103,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,034.20 : 123,051.30 = 68,912.20 : x
  2. Step 2: Convert to fraction form
    82,034.20/123,051.30 = 68,912.20/x
  3. Step 3: Cross multiply
    82,034.20x = 123,051.30 × 68,912.20
  4. Step 4: Simplify right side
    82,034.20x = 8,479,735,795.86
  5. Step 5: Solve for x
    x = 8,479,735,795.86/82,034.20
  6. Step 6: Final answer
    x = 103,368.30

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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.