Finding the Fourth Proportional to 128,023.87, 176,756.15 and 114,571.99
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Solution
The fourth proportional to 128,023.87, 176,756.15 and 114,571.99 is: 158,183.82
Step by Step Solution
- Step 1: Write the proportion equation
128,023.87 : 176,756.15 = 114,571.99 : x - Step 2: Convert to fraction form
128,023.87/176,756.15 = 114,571.99/x - Step 3: Cross multiply
128,023.87x = 176,756.15 × 114,571.99 - Step 4: Simplify right side
128,023.87x = 20,251,303,850.24 - Step 5: Solve for x
x = 20,251,303,850.24/128,023.87 - Step 6: Final answer
x = 158,183.82
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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.