Finding the Fourth Proportional to 120,676,290.88, 166,538,765.20 and 71,118,756.08
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Solution
The fourth proportional to 120,676,290.88, 166,538,765.20 and 71,118,756.08 is: 98,147,115.18
Step by Step Solution
- Step 1: Write the proportion equation
120,676,290.88 : 166,538,765.20 = 71,118,756.08 : x - Step 2: Convert to fraction form
120,676,290.88/166,538,765.20 = 71,118,756.08/x - Step 3: Cross multiply
120,676,290.88x = 166,538,765.20 × 71,118,756.08 - Step 4: Simplify right side
120,676,290.88x = 11,844,029,820,123,192 - Step 5: Solve for x
x = 11,844,029,820,123,192/120,676,290.88 - Step 6: Final answer
x = 98,147,115.18
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.