Finding the Fourth Proportional to 128,305,643.20, 192,458,464.80 and 128,305,643.20
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Solution
The fourth proportional to 128,305,643.20, 192,458,464.80 and 128,305,643.20 is: 192,458,464.80
Step by Step Solution
- Step 1: Write the proportion equation
128,305,643.20 : 192,458,464.80 = 128,305,643.20 : x - Step 2: Convert to fraction form
128,305,643.20/192,458,464.80 = 128,305,643.20/x - Step 3: Cross multiply
128,305,643.20x = 192,458,464.80 × 128,305,643.20 - Step 4: Simplify right side
128,305,643.20x = 24,693,507,115,448,560 - Step 5: Solve for x
x = 24,693,507,115,448,560/128,305,643.20 - Step 6: Final answer
x = 192,458,464.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.