Finding the Fourth Proportional to 128,304,390.30, 192,511,881.45 and 74,497,695.90
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Solution
The fourth proportional to 128,304,390.30, 192,511,881.45 and 74,497,695.90 is: 111,778,650.50
Step by Step Solution
- Step 1: Write the proportion equation
128,304,390.30 : 192,511,881.45 = 74,497,695.90 : x - Step 2: Convert to fraction form
128,304,390.30/192,511,881.45 = 74,497,695.90/x - Step 3: Cross multiply
128,304,390.30x = 192,511,881.45 × 74,497,695.90 - Step 4: Simplify right side
128,304,390.30x = 14,341,691,601,398,952 - Step 5: Solve for x
x = 14,341,691,601,398,952/128,304,390.30 - Step 6: Final answer
x = 111,778,650.50
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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.