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Finding the Fourth Proportional to 82,104.16, 122,916.20 and 74,224.73

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Solution

The fourth proportional to 82,104.16, 122,916.20 and 74,224.73 is: 111,120.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,104.16 : 122,916.20 = 74,224.73 : x
  2. Step 2: Convert to fraction form
    82,104.16/122,916.20 = 74,224.73/x
  3. Step 3: Cross multiply
    82,104.16x = 122,916.20 × 74,224.73
  4. Step 4: Simplify right side
    82,104.16x = 9,123,421,693.79
  5. Step 5: Solve for x
    x = 9,123,421,693.79/82,104.16
  6. Step 6: Final answer
    x = 111,120.09

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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.