Finding the Fourth Proportional to 129,983.40, 194,975.10 and 106,363.80
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Solution
The fourth proportional to 129,983.40, 194,975.10 and 106,363.80 is: 159,545.70
Step by Step Solution
- Step 1: Write the proportion equation
129,983.40 : 194,975.10 = 106,363.80 : x - Step 2: Convert to fraction form
129,983.40/194,975.10 = 106,363.80/x - Step 3: Cross multiply
129,983.40x = 194,975.10 × 106,363.80 - Step 4: Simplify right side
129,983.40x = 20,738,292,541.38 - Step 5: Solve for x
x = 20,738,292,541.38/129,983.40 - Step 6: Final answer
x = 159,545.70
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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.