Finding the Fourth Proportional to 157,138.44, 216,846.88 and 85,516.92
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Solution
The fourth proportional to 157,138.44, 216,846.88 and 85,516.92 is: 118,011.08
Step by Step Solution
- Step 1: Write the proportion equation
157,138.44 : 216,846.88 = 85,516.92 : x - Step 2: Convert to fraction form
157,138.44/216,846.88 = 85,516.92/x - Step 3: Cross multiply
157,138.44x = 216,846.88 × 85,516.92 - Step 4: Simplify right side
157,138.44x = 18,544,077,289.21 - Step 5: Solve for x
x = 18,544,077,289.21/157,138.44 - Step 6: Final answer
x = 118,011.08
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1.5x scale
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.