Finding the Fourth Proportional to 129,310,307.70, 193,965,461.55 and 122,933,015.70
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Solution
The fourth proportional to 129,310,307.70, 193,965,461.55 and 122,933,015.70 is: 184,399,523.55
Step by Step Solution
- Step 1: Write the proportion equation
129,310,307.70 : 193,965,461.55 = 122,933,015.70 : x - Step 2: Convert to fraction form
129,310,307.70/193,965,461.55 = 122,933,015.70/x - Step 3: Cross multiply
129,310,307.70x = 193,965,461.55 × 122,933,015.70 - Step 4: Simplify right side
129,310,307.70x = 23,844,759,129,983,900 - Step 5: Solve for x
x = 23,844,759,129,983,900/129,310,307.70 - Step 6: Final answer
x = 184,399,523.55
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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.