Finding the Fourth Proportional to 128,550.36, 177,356.51 and 74,823.97
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Solution
The fourth proportional to 128,550.36, 177,356.51 and 74,823.97 is: 103,232.06
Step by Step Solution
- Step 1: Write the proportion equation
128,550.36 : 177,356.51 = 74,823.97 : x - Step 2: Convert to fraction form
128,550.36/177,356.51 = 74,823.97/x - Step 3: Cross multiply
128,550.36x = 177,356.51 × 74,823.97 - Step 4: Simplify right side
128,550.36x = 13,270,518,183.54 - Step 5: Solve for x
x = 13,270,518,183.54/128,550.36 - Step 6: Final answer
x = 103,232.06
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1.5x scale
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.