Finding the Fourth Proportional to 143,651.13, 198,236.66 and 79,119.12
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Solution
The fourth proportional to 143,651.13, 198,236.66 and 79,119.12 is: 109,183.34
Step by Step Solution
- Step 1: Write the proportion equation
143,651.13 : 198,236.66 = 79,119.12 : x - Step 2: Convert to fraction form
143,651.13/198,236.66 = 79,119.12/x - Step 3: Cross multiply
143,651.13x = 198,236.66 × 79,119.12 - Step 4: Simplify right side
143,651.13x = 15,684,310,090.94 - Step 5: Solve for x
x = 15,684,310,090.94/143,651.13 - Step 6: Final answer
x = 109,183.34
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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.