Finding the Fourth Proportional to 215,892.12, 323,859.76 and 66,130.68
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Solution
The fourth proportional to 215,892.12, 323,859.76 and 66,130.68 is: 99,202.63
Step by Step Solution
- Step 1: Write the proportion equation
215,892.12 : 323,859.76 = 66,130.68 : x - Step 2: Convert to fraction form
215,892.12/323,859.76 = 66,130.68/x - Step 3: Cross multiply
215,892.12x = 323,859.76 × 66,130.68 - Step 4: Simplify right side
215,892.12x = 21,417,066,153.44 - Step 5: Solve for x
x = 21,417,066,153.44/215,892.12 - Step 6: Final answer
x = 99,202.63
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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.