Finding the Fourth Proportional to 137,059.92, 189,143.84 and 75,805.09
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Solution
The fourth proportional to 137,059.92, 189,143.84 and 75,805.09 is: 104,611.66
Step by Step Solution
- Step 1: Write the proportion equation
137,059.92 : 189,143.84 = 75,805.09 : x - Step 2: Convert to fraction form
137,059.92/189,143.84 = 75,805.09/x - Step 3: Cross multiply
137,059.92x = 189,143.84 × 75,805.09 - Step 4: Simplify right side
137,059.92x = 14,338,065,530.80 - Step 5: Solve for x
x = 14,338,065,530.80/137,059.92 - Step 6: Final answer
x = 104,611.66
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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.