Finding the Fourth Proportional to 166,571.88, 229,865.70 and 91,117.80
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Solution
The fourth proportional to 166,571.88, 229,865.70 and 91,117.80 is: 125,740.65
Step by Step Solution
- Step 1: Write the proportion equation
166,571.88 : 229,865.70 = 91,117.80 : x - Step 2: Convert to fraction form
166,571.88/229,865.70 = 91,117.80/x - Step 3: Cross multiply
166,571.88x = 229,865.70 × 91,117.80 - Step 4: Simplify right side
166,571.88x = 20,944,856,879.46 - Step 5: Solve for x
x = 20,944,856,879.46/166,571.88 - Step 6: Final answer
x = 125,740.65
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1.5x scale
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.