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Finding the Fourth Proportional to 100,511.70, 150,548.85 and 60,999.90

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Solution

The fourth proportional to 100,511.70, 150,548.85 and 60,999.90 is: 91,367.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,511.70 : 150,548.85 = 60,999.90 : x
  2. Step 2: Convert to fraction form
    100,511.70/150,548.85 = 60,999.90/x
  3. Step 3: Cross multiply
    100,511.70x = 150,548.85 × 60,999.90
  4. Step 4: Simplify right side
    100,511.70x = 9,183,464,795.12
  5. Step 5: Solve for x
    x = 9,183,464,795.12/100,511.70
  6. Step 6: Final answer
    x = 91,367.12

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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.