Finding the Fourth Proportional to 151,687.68, 209,329.59 and 83,706.63
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Solution
The fourth proportional to 151,687.68, 209,329.59 and 83,706.63 is: 115,515.48
Step by Step Solution
- Step 1: Write the proportion equation
151,687.68 : 209,329.59 = 83,706.63 : x - Step 2: Convert to fraction form
151,687.68/209,329.59 = 83,706.63/x - Step 3: Cross multiply
151,687.68x = 209,329.59 × 83,706.63 - Step 4: Simplify right side
151,687.68x = 17,522,274,538.18 - Step 5: Solve for x
x = 17,522,274,538.18/151,687.68 - Step 6: Final answer
x = 115,515.48
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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.