Finding the Fourth Proportional to 120,989.93, 166,961.70 and 66,541.62
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Solution
The fourth proportional to 120,989.93, 166,961.70 and 66,541.62 is: 91,825.02
Step by Step Solution
- Step 1: Write the proportion equation
120,989.93 : 166,961.70 = 66,541.62 : x - Step 2: Convert to fraction form
120,989.93/166,961.70 = 66,541.62/x - Step 3: Cross multiply
120,989.93x = 166,961.70 × 66,541.62 - Step 4: Simplify right side
120,989.93x = 11,109,901,995.95 - Step 5: Solve for x
x = 11,109,901,995.95/120,989.93 - Step 6: Final answer
x = 91,825.02
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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.