Finding the Fourth Proportional to 212,668.58, 318,986.12 and 92,722.70
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Solution
The fourth proportional to 212,668.58, 318,986.12 and 92,722.70 is: 139,076.75
Step by Step Solution
- Step 1: Write the proportion equation
212,668.58 : 318,986.12 = 92,722.70 : x - Step 2: Convert to fraction form
212,668.58/318,986.12 = 92,722.70/x - Step 3: Cross multiply
212,668.58x = 318,986.12 × 92,722.70 - Step 4: Simplify right side
212,668.58x = 29,577,254,308.92 - Step 5: Solve for x
x = 29,577,254,308.92/212,668.58 - Step 6: Final answer
x = 139,076.75
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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.