Finding the Fourth Proportional to 157,371.10, 217,169.36 and 85,751.70
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Solution
The fourth proportional to 157,371.10, 217,169.36 and 85,751.70 is: 118,335.84
Step by Step Solution
- Step 1: Write the proportion equation
157,371.10 : 217,169.36 = 85,751.70 : x - Step 2: Convert to fraction form
157,371.10/217,169.36 = 85,751.70/x - Step 3: Cross multiply
157,371.10x = 217,169.36 × 85,751.70 - Step 4: Simplify right side
157,371.10x = 18,622,641,807.91 - Step 5: Solve for x
x = 18,622,641,807.91/157,371.10 - Step 6: Final answer
x = 118,335.84
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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.