Finding the Fourth Proportional to 149,745.24, 206,646.85 and 81,761.99
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Solution
The fourth proportional to 149,745.24, 206,646.85 and 81,761.99 is: 112,830.68
Step by Step Solution
- Step 1: Write the proportion equation
149,745.24 : 206,646.85 = 81,761.99 : x - Step 2: Convert to fraction form
149,745.24/206,646.85 = 81,761.99/x - Step 3: Cross multiply
149,745.24x = 206,646.85 × 81,761.99 - Step 4: Simplify right side
149,745.24x = 16,895,857,274.42 - Step 5: Solve for x
x = 16,895,857,274.42/149,745.24 - Step 6: Final answer
x = 112,830.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.