Finding the Fourth Proportional to 134,859.80, 202,289.70 and 82,371.80
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Solution
The fourth proportional to 134,859.80, 202,289.70 and 82,371.80 is: 123,557.70
Step by Step Solution
- Step 1: Write the proportion equation
134,859.80 : 202,289.70 = 82,371.80 : x - Step 2: Convert to fraction form
134,859.80/202,289.70 = 82,371.80/x - Step 3: Cross multiply
134,859.80x = 202,289.70 × 82,371.80 - Step 4: Simplify right side
134,859.80x = 16,662,966,710.46 - Step 5: Solve for x
x = 16,662,966,710.46/134,859.80 - Step 6: Final answer
x = 123,557.70
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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.