Finding the Fourth Proportional to 120,374.24, 166,135.20 and 68,691.44
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Solution
The fourth proportional to 120,374.24, 166,135.20 and 68,691.44 is: 94,804.89
Step by Step Solution
- Step 1: Write the proportion equation
120,374.24 : 166,135.20 = 68,691.44 : x - Step 2: Convert to fraction form
120,374.24/166,135.20 = 68,691.44/x - Step 3: Cross multiply
120,374.24x = 166,135.20 × 68,691.44 - Step 4: Simplify right side
120,374.24x = 11,412,066,122.69 - Step 5: Solve for x
x = 11,412,066,122.69/120,374.24 - Step 6: Final answer
x = 94,804.89
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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.