Finding the Fourth Proportional to 145,212.09, 200,305.74 and 91,403.70
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Solution
The fourth proportional to 145,212.09, 200,305.74 and 91,403.70 is: 126,082.38
Step by Step Solution
- Step 1: Write the proportion equation
145,212.09 : 200,305.74 = 91,403.70 : x - Step 2: Convert to fraction form
145,212.09/200,305.74 = 91,403.70/x - Step 3: Cross multiply
145,212.09x = 200,305.74 × 91,403.70 - Step 4: Simplify right side
145,212.09x = 18,308,685,767.24 - Step 5: Solve for x
x = 18,308,685,767.24/145,212.09 - Step 6: Final answer
x = 126,082.38
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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.