Finding the Fourth Proportional to 120,478,242.24, 166,261,765.98 and 65,474,142.48
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Solution
The fourth proportional to 120,478,242.24, 166,261,765.98 and 65,474,142.48 is: 90,355,290.32
Step by Step Solution
- Step 1: Write the proportion equation
120,478,242.24 : 166,261,765.98 = 65,474,142.48 : x - Step 2: Convert to fraction form
120,478,242.24/166,261,765.98 = 65,474,142.48/x - Step 3: Cross multiply
120,478,242.24x = 166,261,765.98 × 65,474,142.48 - Step 4: Simplify right side
120,478,242.24x = 10,885,846,554,750,936 - Step 5: Solve for x
x = 10,885,846,554,750,936/120,478,242.24 - Step 6: Final answer
x = 90,355,290.32
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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.