Finding the Fourth Proportional to 121,505.80, 182,258.70 and 68,361.70
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Solution
The fourth proportional to 121,505.80, 182,258.70 and 68,361.70 is: 102,542.55
Step by Step Solution
- Step 1: Write the proportion equation
121,505.80 : 182,258.70 = 68,361.70 : x - Step 2: Convert to fraction form
121,505.80/182,258.70 = 68,361.70/x - Step 3: Cross multiply
121,505.80x = 182,258.70 × 68,361.70 - Step 4: Simplify right side
121,505.80x = 12,459,514,571.79 - Step 5: Solve for x
x = 12,459,514,571.79/121,505.80 - Step 6: Final answer
x = 102,542.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.