Finding the Fourth Proportional to 110,221.80, 165,201.44 and 76,760.70
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Solution
The fourth proportional to 110,221.80, 165,201.44 and 76,760.70 is: 115,049.64
Step by Step Solution
- Step 1: Write the proportion equation
110,221.80 : 165,201.44 = 76,760.70 : x - Step 2: Convert to fraction form
110,221.80/165,201.44 = 76,760.70/x - Step 3: Cross multiply
110,221.80x = 165,201.44 × 76,760.70 - Step 4: Simplify right side
110,221.80x = 12,680,978,175.41 - Step 5: Solve for x
x = 12,680,978,175.41/110,221.80 - Step 6: Final answer
x = 115,049.64
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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.