Finding the Fourth Proportional to 122,883.65, 169,538.88 and 100,183.62
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Solution
The fourth proportional to 122,883.65, 169,538.88 and 100,183.62 is: 138,220.33
Step by Step Solution
- Step 1: Write the proportion equation
122,883.65 : 169,538.88 = 100,183.62 : x - Step 2: Convert to fraction form
122,883.65/169,538.88 = 100,183.62/x - Step 3: Cross multiply
122,883.65x = 169,538.88 × 100,183.62 - Step 4: Simplify right side
122,883.65x = 16,985,018,729.15 - Step 5: Solve for x
x = 16,985,018,729.15/122,883.65 - Step 6: Final answer
x = 138,220.33
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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.