Finding the Fourth Proportional to 137,620.95, 189,902.52 and 80,244.99
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Solution
The fourth proportional to 137,620.95, 189,902.52 and 80,244.99 is: 110,729.69
Step by Step Solution
- Step 1: Write the proportion equation
137,620.95 : 189,902.52 = 80,244.99 : x - Step 2: Convert to fraction form
137,620.95/189,902.52 = 80,244.99/x - Step 3: Cross multiply
137,620.95x = 189,902.52 × 80,244.99 - Step 4: Simplify right side
137,620.95x = 15,238,725,818.37 - Step 5: Solve for x
x = 15,238,725,818.37/137,620.95 - Step 6: Final answer
x = 110,729.69
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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.