Finding the Fourth Proportional to 129,444.62, 193,751.40 and 69,389.60
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Solution
The fourth proportional to 129,444.62, 193,751.40 and 69,389.60 is: 103,861.65
Step by Step Solution
- Step 1: Write the proportion equation
129,444.62 : 193,751.40 = 69,389.60 : x - Step 2: Convert to fraction form
129,444.62/193,751.40 = 69,389.60/x - Step 3: Cross multiply
129,444.62x = 193,751.40 × 69,389.60 - Step 4: Simplify right side
129,444.62x = 13,444,332,145.44 - Step 5: Solve for x
x = 13,444,332,145.44/129,444.62 - Step 6: Final answer
x = 103,861.65
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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.