Finding the Fourth Proportional to 128,441,183.68, 177,250,131.12 and 69,704,356.06
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Solution
The fourth proportional to 128,441,183.68, 177,250,131.12 and 69,704,356.06 is: 96,192,715.59
Step by Step Solution
- Step 1: Write the proportion equation
128,441,183.68 : 177,250,131.12 = 69,704,356.06 : x - Step 2: Convert to fraction form
128,441,183.68/177,250,131.12 = 69,704,356.06/x - Step 3: Cross multiply
128,441,183.68x = 177,250,131.12 × 69,704,356.06 - Step 4: Simplify right side
128,441,183.68x = 12,355,106,251,270,168 - Step 5: Solve for x
x = 12,355,106,251,270,168/128,441,183.68 - Step 6: Final answer
x = 96,192,715.59
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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.