Finding the Fourth Proportional to 113,454.20, 156,782.70 and 85,110.68
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Solution
The fourth proportional to 113,454.20, 156,782.70 and 85,110.68 is: 117,614.70
Step by Step Solution
- Step 1: Write the proportion equation
113,454.20 : 156,782.70 = 85,110.68 : x - Step 2: Convert to fraction form
113,454.20/156,782.70 = 85,110.68/x - Step 3: Cross multiply
113,454.20x = 156,782.70 × 85,110.68 - Step 4: Simplify right side
113,454.20x = 13,343,882,209.24 - Step 5: Solve for x
x = 13,343,882,209.24/113,454.20 - Step 6: Final answer
x = 117,614.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.