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Finding the Fourth Proportional to 99,350.40, 149,025.60 and 73,171.20

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Solution

The fourth proportional to 99,350.40, 149,025.60 and 73,171.20 is: 109,756.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,350.40 : 149,025.60 = 73,171.20 : x
  2. Step 2: Convert to fraction form
    99,350.40/149,025.60 = 73,171.20/x
  3. Step 3: Cross multiply
    99,350.40x = 149,025.60 × 73,171.20
  4. Step 4: Simplify right side
    99,350.40x = 10,904,381,982.72
  5. Step 5: Solve for x
    x = 10,904,381,982.72/99,350.40
  6. Step 6: Final answer
    x = 109,756.80

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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.