Finding the Fourth Proportional to 220,183,142.80, 330,274,714.20 and 90,724,115.20
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Solution
The fourth proportional to 220,183,142.80, 330,274,714.20 and 90,724,115.20 is: 136,086,172.80
Step by Step Solution
- Step 1: Write the proportion equation
220,183,142.80 : 330,274,714.20 = 90,724,115.20 : x - Step 2: Convert to fraction form
220,183,142.80/330,274,714.20 = 90,724,115.20/x - Step 3: Cross multiply
220,183,142.80x = 330,274,714.20 × 90,724,115.20 - Step 4: Simplify right side
220,183,142.80x = 29,963,881,218,727,876 - Step 5: Solve for x
x = 29,963,881,218,727,876/220,183,142.80 - Step 6: Final answer
x = 136,086,172.80
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1.5x scale
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.