Finding the Fourth Proportional to 149,748.69, 206,661.57 and 81,771.99
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Solution
The fourth proportional to 149,748.69, 206,661.57 and 81,771.99 is: 112,849.92
Step by Step Solution
- Step 1: Write the proportion equation
149,748.69 : 206,661.57 = 81,771.99 : x - Step 2: Convert to fraction form
149,748.69/206,661.57 = 81,771.99/x - Step 3: Cross multiply
149,748.69x = 206,661.57 × 81,771.99 - Step 4: Simplify right side
149,748.69x = 16,899,127,835.42 - Step 5: Solve for x
x = 16,899,127,835.42/149,748.69 - Step 6: Final answer
x = 112,849.92
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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.