Finding the Fourth Proportional to 231,572.18, 347,176.80 and 91,435.70
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Solution
The fourth proportional to 231,572.18, 347,176.80 and 91,435.70 is: 137,081.89
Step by Step Solution
- Step 1: Write the proportion equation
231,572.18 : 347,176.80 = 91,435.70 : x - Step 2: Convert to fraction form
231,572.18/347,176.80 = 91,435.70/x - Step 3: Cross multiply
231,572.18x = 347,176.80 × 91,435.70 - Step 4: Simplify right side
231,572.18x = 31,744,351,995.88 - Step 5: Solve for x
x = 31,744,351,995.88/231,572.18 - Step 6: Final answer
x = 137,081.89
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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.