Finding the Fourth Proportional to 120,486.78, 166,272.74 and 66,772.68
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Solution
The fourth proportional to 120,486.78, 166,272.74 and 66,772.68 is: 92,146.84
Step by Step Solution
- Step 1: Write the proportion equation
120,486.78 : 166,272.74 = 66,772.68 : x - Step 2: Convert to fraction form
120,486.78/166,272.74 = 66,772.68/x - Step 3: Cross multiply
120,486.78x = 166,272.74 × 66,772.68 - Step 4: Simplify right side
120,486.78x = 11,102,476,460.74 - Step 5: Solve for x
x = 11,102,476,460.74/120,486.78 - Step 6: Final answer
x = 92,146.84
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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.