Finding the Fourth Proportional to 142,218.20, 213,269.70 and 48,675.80
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Solution
The fourth proportional to 142,218.20, 213,269.70 and 48,675.80 is: 72,993.99
Step by Step Solution
- Step 1: Write the proportion equation
142,218.20 : 213,269.70 = 48,675.80 : x - Step 2: Convert to fraction form
142,218.20/213,269.70 = 48,675.80/x - Step 3: Cross multiply
142,218.20x = 213,269.70 × 48,675.80 - Step 4: Simplify right side
142,218.20x = 10,381,073,263.26 - Step 5: Solve for x
x = 10,381,073,263.26/142,218.20 - Step 6: Final answer
x = 72,993.99
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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.