Finding the Fourth Proportional to 120,435.36, 166,201.98 and 66,721.12
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Solution
The fourth proportional to 120,435.36, 166,201.98 and 66,721.12 is: 92,075.80
Step by Step Solution
- Step 1: Write the proportion equation
120,435.36 : 166,201.98 = 66,721.12 : x - Step 2: Convert to fraction form
120,435.36/166,201.98 = 66,721.12/x - Step 3: Cross multiply
120,435.36x = 166,201.98 × 66,721.12 - Step 4: Simplify right side
120,435.36x = 11,089,181,586.11 - Step 5: Solve for x
x = 11,089,181,586.11/120,435.36 - Step 6: Final answer
x = 92,075.80
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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.