Finding the Fourth Proportional to 129,486,986.10, 194,230,479.15 and 115,378,211.70
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Solution
The fourth proportional to 129,486,986.10, 194,230,479.15 and 115,378,211.70 is: 173,067,317.55
Step by Step Solution
- Step 1: Write the proportion equation
129,486,986.10 : 194,230,479.15 = 115,378,211.70 : x - Step 2: Convert to fraction form
129,486,986.10/194,230,479.15 = 115,378,211.70/x - Step 3: Cross multiply
129,486,986.10x = 194,230,479.15 × 115,378,211.70 - Step 4: Simplify right side
129,486,986.10x = 22,409,965,341,961,136 - Step 5: Solve for x
x = 22,409,965,341,961,136/129,486,986.10 - Step 6: Final answer
x = 173,067,317.55
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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.