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Finding the Fourth Proportional to 102,961.20, 154,355.40 and 53,713.20

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Solution

The fourth proportional to 102,961.20, 154,355.40 and 53,713.20 is: 80,524.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,961.20 : 154,355.40 = 53,713.20 : x
  2. Step 2: Convert to fraction form
    102,961.20/154,355.40 = 53,713.20/x
  3. Step 3: Cross multiply
    102,961.20x = 154,355.40 × 53,713.20
  4. Step 4: Simplify right side
    102,961.20x = 8,290,922,471.28
  5. Step 5: Solve for x
    x = 8,290,922,471.28/102,961.20
  6. Step 6: Final answer
    x = 80,524.73

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.