Finding the Fourth Proportional to 209,212.98, 313,643.07 and 90,795.09
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Solution
The fourth proportional to 209,212.98, 313,643.07 and 90,795.09 is: 136,116.08
Step by Step Solution
- Step 1: Write the proportion equation
209,212.98 : 313,643.07 = 90,795.09 : x - Step 2: Convert to fraction form
209,212.98/313,643.07 = 90,795.09/x - Step 3: Cross multiply
209,212.98x = 313,643.07 × 90,795.09 - Step 4: Simplify right side
209,212.98x = 28,477,250,768.53 - Step 5: Solve for x
x = 28,477,250,768.53/209,212.98 - Step 6: Final answer
x = 136,116.08
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.