Finding the Fourth Proportional to 155,790.36, 214,984.44 and 87,821.46
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Solution
The fourth proportional to 155,790.36, 214,984.44 and 87,821.46 is: 121,190.09
Step by Step Solution
- Step 1: Write the proportion equation
155,790.36 : 214,984.44 = 87,821.46 : x - Step 2: Convert to fraction form
155,790.36/214,984.44 = 87,821.46/x - Step 3: Cross multiply
155,790.36x = 214,984.44 × 87,821.46 - Step 4: Simplify right side
155,790.36x = 18,880,247,398.08 - Step 5: Solve for x
x = 18,880,247,398.08/155,790.36 - Step 6: Final answer
x = 121,190.09
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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.