Finding the Fourth Proportional to 160,879.96, 221,869.02 and 100,456.12
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Solution
The fourth proportional to 160,879.96, 221,869.02 and 100,456.12 is: 138,538.70
Step by Step Solution
- Step 1: Write the proportion equation
160,879.96 : 221,869.02 = 100,456.12 : x - Step 2: Convert to fraction form
160,879.96/221,869.02 = 100,456.12/x - Step 3: Cross multiply
160,879.96x = 221,869.02 × 100,456.12 - Step 4: Simplify right side
160,879.96x = 22,288,100,897.40 - Step 5: Solve for x
x = 22,288,100,897.40/160,879.96 - Step 6: Final answer
x = 138,538.70
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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.