Finding the Fourth Proportional to 139,918.77, 209,939.99 and 73,342.98
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Solution
The fourth proportional to 139,918.77, 209,939.99 and 73,342.98 is: 110,046.88
Step by Step Solution
- Step 1: Write the proportion equation
139,918.77 : 209,939.99 = 73,342.98 : x - Step 2: Convert to fraction form
139,918.77/209,939.99 = 73,342.98/x - Step 3: Cross multiply
139,918.77x = 209,939.99 × 73,342.98 - Step 4: Simplify right side
139,918.77x = 15,397,624,121.06 - Step 5: Solve for x
x = 15,397,624,121.06/139,918.77 - Step 6: Final answer
x = 110,046.88
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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.