Finding the Fourth Proportional to 128,364,812.11, 192,555,272.58 and 36,255,762.37
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Solution
The fourth proportional to 128,364,812.11, 192,555,272.58 and 36,255,762.37 is: 54,385,918.47
Step by Step Solution
- Step 1: Write the proportion equation
128,364,812.11 : 192,555,272.58 = 36,255,762.37 : x - Step 2: Convert to fraction form
128,364,812.11/192,555,272.58 = 36,255,762.37/x - Step 3: Cross multiply
128,364,812.11x = 192,555,272.58 × 36,255,762.37 - Step 4: Simplify right side
128,364,812.11x = 6,981,238,205,751,057 - Step 5: Solve for x
x = 6,981,238,205,751,057/128,364,812.11 - Step 6: Final answer
x = 54,385,918.47
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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.