Finding the Fourth Proportional to 129,740.20, 194,595.90 and 106,325.80
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Solution
The fourth proportional to 129,740.20, 194,595.90 and 106,325.80 is: 159,476.90
Step by Step Solution
- Step 1: Write the proportion equation
129,740.20 : 194,595.90 = 106,325.80 : x - Step 2: Convert to fraction form
129,740.20/194,595.90 = 106,325.80/x - Step 3: Cross multiply
129,740.20x = 194,595.90 × 106,325.80 - Step 4: Simplify right side
129,740.20x = 20,690,564,744.22 - Step 5: Solve for x
x = 20,690,564,744.22/129,740.20 - Step 6: Final answer
x = 159,476.90
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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.