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Finding the Fourth Proportional to 98,235.72, 147,132.03 and 68,785.03

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Solution

The fourth proportional to 98,235.72, 147,132.03 and 68,785.03 is: 103,022.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,235.72 : 147,132.03 = 68,785.03 : x
  2. Step 2: Convert to fraction form
    98,235.72/147,132.03 = 68,785.03/x
  3. Step 3: Cross multiply
    98,235.72x = 147,132.03 × 68,785.03
  4. Step 4: Simplify right side
    98,235.72x = 10,120,481,539.37
  5. Step 5: Solve for x
    x = 10,120,481,539.37/98,235.72
  6. Step 6: Final answer
    x = 103,022.42

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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.