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Finding the Fourth Proportional to 98,104.80, 146,811.60 and 68,383.20

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Solution

The fourth proportional to 98,104.80, 146,811.60 and 68,383.20 is: 102,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,104.80 : 146,811.60 = 68,383.20 : x
  2. Step 2: Convert to fraction form
    98,104.80/146,811.60 = 68,383.20/x
  3. Step 3: Cross multiply
    98,104.80x = 146,811.60 × 68,383.20
  4. Step 4: Simplify right side
    98,104.80x = 10,039,447,005.12
  5. Step 5: Solve for x
    x = 10,039,447,005.12/98,104.80
  6. Step 6: Final answer
    x = 102,333.90

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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.