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Finding the Fourth Proportional to 99,323.80, 148,982.37 and 43,163.90

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Solution

The fourth proportional to 99,323.80, 148,982.37 and 43,163.90 is: 64,744.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,323.80 : 148,982.37 = 43,163.90 : x
  2. Step 2: Convert to fraction form
    99,323.80/148,982.37 = 43,163.90/x
  3. Step 3: Cross multiply
    99,323.80x = 148,982.37 × 43,163.90
  4. Step 4: Simplify right side
    99,323.80x = 6,430,660,555.40
  5. Step 5: Solve for x
    x = 6,430,660,555.40/99,323.80
  6. Step 6: Final answer
    x = 64,744.41

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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.