Finding the Fourth Proportional to 115,606.44, 173,335.77 and 85,639.05
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Solution
The fourth proportional to 115,606.44, 173,335.77 and 85,639.05 is: 128,403.84
Step by Step Solution
- Step 1: Write the proportion equation
115,606.44 : 173,335.77 = 85,639.05 : x - Step 2: Convert to fraction form
115,606.44/173,335.77 = 85,639.05/x - Step 3: Cross multiply
115,606.44x = 173,335.77 × 85,639.05 - Step 4: Simplify right side
115,606.44x = 14,844,310,673.82 - Step 5: Solve for x
x = 14,844,310,673.82/115,606.44 - Step 6: Final answer
x = 128,403.84
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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.