Finding the Fourth Proportional to 121,464.48, 182,138.40 and 68,859.84
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Solution
The fourth proportional to 121,464.48, 182,138.40 and 68,859.84 is: 103,256.70
Step by Step Solution
- Step 1: Write the proportion equation
121,464.48 : 182,138.40 = 68,859.84 : x - Step 2: Convert to fraction form
121,464.48/182,138.40 = 68,859.84/x - Step 3: Cross multiply
121,464.48x = 182,138.40 × 68,859.84 - Step 4: Simplify right side
121,464.48x = 12,542,021,081.86 - Step 5: Solve for x
x = 12,542,021,081.86/121,464.48 - Step 6: Final answer
x = 103,256.70
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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.