Finding the Fourth Proportional to 120,998,071.20, 181,497,106.80 and 40,208,541.60
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Solution
The fourth proportional to 120,998,071.20, 181,497,106.80 and 40,208,541.60 is: 60,312,812.40
Step by Step Solution
- Step 1: Write the proportion equation
120,998,071.20 : 181,497,106.80 = 40,208,541.60 : x - Step 2: Convert to fraction form
120,998,071.20/181,497,106.80 = 40,208,541.60/x - Step 3: Cross multiply
120,998,071.20x = 181,497,106.80 × 40,208,541.60 - Step 4: Simplify right side
120,998,071.20x = 7,297,733,969,047,444 - Step 5: Solve for x
x = 7,297,733,969,047,444/120,998,071.20 - Step 6: Final answer
x = 60,312,812.40
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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.