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Finding the Fourth Proportional to 99,353.70, 148,989.08 and 40,147.88

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Solution

The fourth proportional to 99,353.70, 148,989.08 and 40,147.88 is: 60,205.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,353.70 : 148,989.08 = 40,147.88 : x
  2. Step 2: Convert to fraction form
    99,353.70/148,989.08 = 40,147.88/x
  3. Step 3: Cross multiply
    99,353.70x = 148,989.08 × 40,147.88
  4. Step 4: Simplify right side
    99,353.70x = 5,981,595,705.15
  5. Step 5: Solve for x
    x = 5,981,595,705.15/99,353.70
  6. Step 6: Final answer
    x = 60,205.06

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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.