Finding the Fourth Proportional to 112,216.38, 154,861.84 and 61,918.62
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Solution
The fourth proportional to 112,216.38, 154,861.84 and 61,918.62 is: 85,449.48
Step by Step Solution
- Step 1: Write the proportion equation
112,216.38 : 154,861.84 = 61,918.62 : x - Step 2: Convert to fraction form
112,216.38/154,861.84 = 61,918.62/x - Step 3: Cross multiply
112,216.38x = 154,861.84 × 61,918.62 - Step 4: Simplify right side
112,216.38x = 9,588,830,649.15 - Step 5: Solve for x
x = 9,588,830,649.15/112,216.38 - Step 6: Final answer
x = 85,449.48
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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.