Finding the Fourth Proportional to 212,160.79, 318,173.12 and 69,974.10
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Solution
The fourth proportional to 212,160.79, 318,173.12 and 69,974.10 is: 104,938.70
Step by Step Solution
- Step 1: Write the proportion equation
212,160.79 : 318,173.12 = 69,974.10 : x - Step 2: Convert to fraction form
212,160.79/318,173.12 = 69,974.10/x - Step 3: Cross multiply
212,160.79x = 318,173.12 × 69,974.10 - Step 4: Simplify right side
212,160.79x = 22,263,877,716.19 - Step 5: Solve for x
x = 22,263,877,716.19/212,160.79 - Step 6: Final answer
x = 104,938.70
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1.5x scale
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.