Finding the Fourth Proportional to 128,304,397.80, 192,511,892.70 and 74,497,703.40
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Solution
The fourth proportional to 128,304,397.80, 192,511,892.70 and 74,497,703.40 is: 111,778,661.75
Step by Step Solution
- Step 1: Write the proportion equation
128,304,397.80 : 192,511,892.70 = 74,497,703.40 : x - Step 2: Convert to fraction form
128,304,397.80/192,511,892.70 = 74,497,703.40/x - Step 3: Cross multiply
128,304,397.80x = 192,511,892.70 × 74,497,703.40 - Step 4: Simplify right side
128,304,397.80x = 14,341,693,883,337,226 - Step 5: Solve for x
x = 14,341,693,883,337,226/128,304,397.80 - Step 6: Final answer
x = 111,778,661.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.