Finding the Fourth Proportional to 140,626.24, 210,970.96 and 47,129.60
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Solution
The fourth proportional to 140,626.24, 210,970.96 and 47,129.60 is: 70,704.99
Step by Step Solution
- Step 1: Write the proportion equation
140,626.24 : 210,970.96 = 47,129.60 : x - Step 2: Convert to fraction form
140,626.24/210,970.96 = 47,129.60/x - Step 3: Cross multiply
140,626.24x = 210,970.96 × 47,129.60 - Step 4: Simplify right side
140,626.24x = 9,942,976,956.42 - Step 5: Solve for x
x = 9,942,976,956.42/140,626.24 - Step 6: Final answer
x = 70,704.99
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1.5x scale
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.