Finding the Fourth Proportional to 154,247,246.62, 212,861,604.57 and 83,682,853.19
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Solution
The fourth proportional to 154,247,246.62, 212,861,604.57 and 83,682,853.19 is: 115,482,556.70
Step by Step Solution
- Step 1: Write the proportion equation
154,247,246.62 : 212,861,604.57 = 83,682,853.19 : x - Step 2: Convert to fraction form
154,247,246.62/212,861,604.57 = 83,682,853.19/x - Step 3: Cross multiply
154,247,246.62x = 212,861,604.57 × 83,682,853.19 - Step 4: Simplify right side
154,247,246.62x = 17,812,866,403,840,050 - Step 5: Solve for x
x = 17,812,866,403,840,050/154,247,246.62 - Step 6: Final answer
x = 115,482,556.70
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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.