Finding the Fourth Proportional to 149,640.20, 206,507.99 and 85,118.70
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Solution
The fourth proportional to 149,640.20, 206,507.99 and 85,118.70 is: 117,466.37
Step by Step Solution
- Step 1: Write the proportion equation
149,640.20 : 206,507.99 = 85,118.70 : x - Step 2: Convert to fraction form
149,640.20/206,507.99 = 85,118.70/x - Step 3: Cross multiply
149,640.20x = 206,507.99 × 85,118.70 - Step 4: Simplify right side
149,640.20x = 17,577,691,222.82 - Step 5: Solve for x
x = 17,577,691,222.82/149,640.20 - Step 6: Final answer
x = 117,466.37
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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.