Finding the Fourth Proportional to 212,579.20, 318,907.20 and 107,132.80
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Solution
The fourth proportional to 212,579.20, 318,907.20 and 107,132.80 is: 160,718.55
Step by Step Solution
- Step 1: Write the proportion equation
212,579.20 : 318,907.20 = 107,132.80 : x - Step 2: Convert to fraction form
212,579.20/318,907.20 = 107,132.80/x - Step 3: Cross multiply
212,579.20x = 318,907.20 × 107,132.80 - Step 4: Simplify right side
212,579.20x = 34,165,421,276.16 - Step 5: Solve for x
x = 34,165,421,276.16/212,579.20 - Step 6: Final answer
x = 160,718.55
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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.