Finding the Fourth Proportional to 134,707.70, 201,799.11 and 81,986.42
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Solution
The fourth proportional to 134,707.70, 201,799.11 and 81,986.42 is: 122,819.90
Step by Step Solution
- Step 1: Write the proportion equation
134,707.70 : 201,799.11 = 81,986.42 : x - Step 2: Convert to fraction form
134,707.70/201,799.11 = 81,986.42/x - Step 3: Cross multiply
134,707.70x = 201,799.11 × 81,986.42 - Step 4: Simplify right side
134,707.70x = 16,544,786,588.09 - Step 5: Solve for x
x = 16,544,786,588.09/134,707.70 - Step 6: Final answer
x = 122,819.90
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1.5x scale
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.