Finding the Fourth Proportional to 120,435.48, 166,202.10 and 66,721.62
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Solution
The fourth proportional to 120,435.48, 166,202.10 and 66,721.62 is: 92,076.47
Step by Step Solution
- Step 1: Write the proportion equation
120,435.48 : 166,202.10 = 66,721.62 : x - Step 2: Convert to fraction form
120,435.48/166,202.10 = 66,721.62/x - Step 3: Cross multiply
120,435.48x = 166,202.10 × 66,721.62 - Step 4: Simplify right side
120,435.48x = 11,089,273,359.40 - Step 5: Solve for x
x = 11,089,273,359.40/120,435.48 - Step 6: Final answer
x = 92,076.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.