Finding the Fourth Proportional to 120,299,530.74, 166,008,907.02 and 65,294,206.26
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Solution
The fourth proportional to 120,299,530.74, 166,008,907.02 and 65,294,206.26 is: 90,103,591.84
Step by Step Solution
- Step 1: Write the proportion equation
120,299,530.74 : 166,008,907.02 = 65,294,206.26 : x - Step 2: Convert to fraction form
120,299,530.74/166,008,907.02 = 65,294,206.26/x - Step 3: Cross multiply
120,299,530.74x = 166,008,907.02 × 65,294,206.26 - Step 4: Simplify right side
120,299,530.74x = 10,839,419,815,961,042 - Step 5: Solve for x
x = 10,839,419,815,961,042/120,299,530.74 - Step 6: Final answer
x = 90,103,591.84
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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.