Finding the Fourth Proportional to 128,383,540.80, 177,122,791.44 and 84,354,253.44
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Solution
The fourth proportional to 128,383,540.80, 177,122,791.44 and 84,354,253.44 is: 116,378,320.35
Step by Step Solution
- Step 1: Write the proportion equation
128,383,540.80 : 177,122,791.44 = 84,354,253.44 : x - Step 2: Convert to fraction form
128,383,540.80/177,122,791.44 = 84,354,253.44/x - Step 3: Cross multiply
128,383,540.80x = 177,122,791.44 × 84,354,253.44 - Step 4: Simplify right side
128,383,540.80x = 14,941,060,839,130,022 - Step 5: Solve for x
x = 14,941,060,839,130,022/128,383,540.80 - Step 6: Final answer
x = 116,378,320.35
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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.