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Finding the Fourth Proportional to 106,508.62, 159,489.60 and 103,355.20

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Solution

The fourth proportional to 106,508.62, 159,489.60 and 103,355.20 is: 154,767.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,508.62 : 159,489.60 = 103,355.20 : x
  2. Step 2: Convert to fraction form
    106,508.62/159,489.60 = 103,355.20/x
  3. Step 3: Cross multiply
    106,508.62x = 159,489.60 × 103,355.20
  4. Step 4: Simplify right side
    106,508.62x = 16,484,079,505.92
  5. Step 5: Solve for x
    x = 16,484,079,505.92/106,508.62
  6. Step 6: Final answer
    x = 154,767.56

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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.