Finding the Fourth Proportional to 139,390.65, 209,093.94 and 39,542.99
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Solution
The fourth proportional to 139,390.65, 209,093.94 and 39,542.99 is: 59,316.74
Step by Step Solution
- Step 1: Write the proportion equation
139,390.65 : 209,093.94 = 39,542.99 : x - Step 2: Convert to fraction form
139,390.65/209,093.94 = 39,542.99/x - Step 3: Cross multiply
139,390.65x = 209,093.94 × 39,542.99 - Step 4: Simplify right side
139,390.65x = 8,268,198,533.01 - Step 5: Solve for x
x = 8,268,198,533.01/139,390.65 - Step 6: Final answer
x = 59,316.74
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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.