Finding the Fourth Proportional to 143,620.11, 198,144.45 and 83,157.75
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Solution
The fourth proportional to 143,620.11, 198,144.45 and 83,157.75 is: 114,727.99
Step by Step Solution
- Step 1: Write the proportion equation
143,620.11 : 198,144.45 = 83,157.75 : x - Step 2: Convert to fraction form
143,620.11/198,144.45 = 83,157.75/x - Step 3: Cross multiply
143,620.11x = 198,144.45 × 83,157.75 - Step 4: Simplify right side
143,620.11x = 16,477,246,636.99 - Step 5: Solve for x
x = 16,477,246,636.99/143,620.11 - Step 6: Final answer
x = 114,727.99
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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.