Finding the Fourth Proportional to 120,731.18, 166,605.96 and 66,283.08
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Solution
The fourth proportional to 120,731.18, 166,605.96 and 66,283.08 is: 91,468.97
Step by Step Solution
- Step 1: Write the proportion equation
120,731.18 : 166,605.96 = 66,283.08 : x - Step 2: Convert to fraction form
120,731.18/166,605.96 = 66,283.08/x - Step 3: Cross multiply
120,731.18x = 166,605.96 × 66,283.08 - Step 4: Simplify right side
120,731.18x = 11,043,156,736.10 - Step 5: Solve for x
x = 11,043,156,736.10/120,731.18 - Step 6: Final answer
x = 91,468.97
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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.