Finding the Fourth Proportional to 147,786.19, 203,945.75 and 80,718.19
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Solution
The fourth proportional to 147,786.19, 203,945.75 and 80,718.19 is: 111,391.54
Step by Step Solution
- Step 1: Write the proportion equation
147,786.19 : 203,945.75 = 80,718.19 : x - Step 2: Convert to fraction form
147,786.19/203,945.75 = 80,718.19/x - Step 3: Cross multiply
147,786.19x = 203,945.75 × 80,718.19 - Step 4: Simplify right side
147,786.19x = 16,462,131,187.43 - Step 5: Solve for x
x = 16,462,131,187.43/147,786.19 - Step 6: Final answer
x = 111,391.54
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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.