Finding the Fourth Proportional to 158,906.70, 219,310.77 and 91,838.70
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Solution
The fourth proportional to 158,906.70, 219,310.77 and 91,838.70 is: 126,748.69
Step by Step Solution
- Step 1: Write the proportion equation
158,906.70 : 219,310.77 = 91,838.70 : x - Step 2: Convert to fraction form
158,906.70/219,310.77 = 91,838.70/x - Step 3: Cross multiply
158,906.70x = 219,310.77 × 91,838.70 - Step 4: Simplify right side
158,906.70x = 20,141,216,012.80 - Step 5: Solve for x
x = 20,141,216,012.80/158,906.70 - Step 6: Final answer
x = 126,748.69
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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.