Finding the Fourth Proportional to 163,986.20, 245,979.30 and 149,211.80
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Solution
The fourth proportional to 163,986.20, 245,979.30 and 149,211.80 is: 223,817.70
Step by Step Solution
- Step 1: Write the proportion equation
163,986.20 : 245,979.30 = 149,211.80 : x - Step 2: Convert to fraction form
163,986.20/245,979.30 = 149,211.80/x - Step 3: Cross multiply
163,986.20x = 245,979.30 × 149,211.80 - Step 4: Simplify right side
163,986.20x = 36,703,014,115.74 - Step 5: Solve for x
x = 36,703,014,115.74/163,986.20 - Step 6: Final answer
x = 223,817.70
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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.