Finding the Fourth Proportional to 231,657.18, 319,717.06 and 129,721.46
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Solution
The fourth proportional to 231,657.18, 319,717.06 and 129,721.46 is: 179,032.50
Step by Step Solution
- Step 1: Write the proportion equation
231,657.18 : 319,717.06 = 129,721.46 : x - Step 2: Convert to fraction form
231,657.18/319,717.06 = 129,721.46/x - Step 3: Cross multiply
231,657.18x = 319,717.06 × 129,721.46 - Step 4: Simplify right side
231,657.18x = 41,474,163,810.11 - Step 5: Solve for x
x = 41,474,163,810.11/231,657.18 - Step 6: Final answer
x = 179,032.50
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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.