Finding the Fourth Proportional to 221,661.62, 305,894.99 and 126,174.46
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Solution
The fourth proportional to 221,661.62, 305,894.99 and 126,174.46 is: 174,121.87
Step by Step Solution
- Step 1: Write the proportion equation
221,661.62 : 305,894.99 = 126,174.46 : x - Step 2: Convert to fraction form
221,661.62/305,894.99 = 126,174.46/x - Step 3: Cross multiply
221,661.62x = 305,894.99 × 126,174.46 - Step 4: Simplify right side
221,661.62x = 38,596,134,549.08 - Step 5: Solve for x
x = 38,596,134,549.08/221,661.62 - Step 6: Final answer
x = 174,121.87
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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.