Finding the Fourth Proportional to 128,023.49, 176,755.63 and 114,571.62
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Solution
The fourth proportional to 128,023.49, 176,755.63 and 114,571.62 is: 158,183.31
Step by Step Solution
- Step 1: Write the proportion equation
128,023.49 : 176,755.63 = 114,571.62 : x - Step 2: Convert to fraction form
128,023.49/176,755.63 = 114,571.62/x - Step 3: Cross multiply
128,023.49x = 176,755.63 × 114,571.62 - Step 4: Simplify right side
128,023.49x = 20,251,178,873.22 - Step 5: Solve for x
x = 20,251,178,873.22/128,023.49 - Step 6: Final answer
x = 158,183.31
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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.