Finding the Fourth Proportional to 203,643.10, 281,027.64 and 112,998.70
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Solution
The fourth proportional to 203,643.10, 281,027.64 and 112,998.70 is: 155,938.30
Step by Step Solution
- Step 1: Write the proportion equation
203,643.10 : 281,027.64 = 112,998.70 : x - Step 2: Convert to fraction form
203,643.10/281,027.64 = 112,998.70/x - Step 3: Cross multiply
203,643.10x = 281,027.64 × 112,998.70 - Step 4: Simplify right side
203,643.10x = 31,755,757,984.07 - Step 5: Solve for x
x = 31,755,757,984.07/203,643.10 - Step 6: Final answer
x = 155,938.30
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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.