Finding the Fourth Proportional to 128,550.22, 177,356.36 and 74,823.82
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Solution
The fourth proportional to 128,550.22, 177,356.36 and 74,823.82 is: 103,231.88
Step by Step Solution
- Step 1: Write the proportion equation
128,550.22 : 177,356.36 = 74,823.82 : x - Step 2: Convert to fraction form
128,550.22/177,356.36 = 74,823.82/x - Step 3: Cross multiply
128,550.22x = 177,356.36 × 74,823.82 - Step 4: Simplify right side
128,550.22x = 13,270,480,356.50 - Step 5: Solve for x
x = 13,270,480,356.50/128,550.22 - Step 6: Final answer
x = 103,231.88
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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.