Finding the Fourth Proportional to 128,813.44, 177,745.44 and 71,451.94
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Solution
The fourth proportional to 128,813.44, 177,745.44 and 71,451.94 is: 98,594.19
Step by Step Solution
- Step 1: Write the proportion equation
128,813.44 : 177,745.44 = 71,451.94 : x - Step 2: Convert to fraction form
128,813.44/177,745.44 = 71,451.94/x - Step 3: Cross multiply
128,813.44x = 177,745.44 × 71,451.94 - Step 4: Simplify right side
128,813.44x = 12,700,256,514.15 - Step 5: Solve for x
x = 12,700,256,514.15/128,813.44 - Step 6: Final answer
x = 98,594.19
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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.