Finding the Fourth Proportional to 121,278,808.80, 181,918,213.20 and 66,670,293.60
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Solution
The fourth proportional to 121,278,808.80, 181,918,213.20 and 66,670,293.60 is: 100,005,440.40
Step by Step Solution
- Step 1: Write the proportion equation
121,278,808.80 : 181,918,213.20 = 66,670,293.60 : x - Step 2: Convert to fraction form
121,278,808.80/181,918,213.20 = 66,670,293.60/x - Step 3: Cross multiply
121,278,808.80x = 181,918,213.20 × 66,670,293.60 - Step 4: Simplify right side
121,278,808.80x = 12,128,540,685,231,394 - Step 5: Solve for x
x = 12,128,540,685,231,394/121,278,808.80 - Step 6: Final answer
x = 100,005,440.40
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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.