Finding the Fourth Proportional to 157,390.36, 217,193.18 and 85,768.92
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Solution
The fourth proportional to 157,390.36, 217,193.18 and 85,768.92 is: 118,358.10
Step by Step Solution
- Step 1: Write the proportion equation
157,390.36 : 217,193.18 = 85,768.92 : x - Step 2: Convert to fraction form
157,390.36/217,193.18 = 85,768.92/x - Step 3: Cross multiply
157,390.36x = 217,193.18 × 85,768.92 - Step 4: Simplify right side
157,390.36x = 18,628,424,479.97 - Step 5: Solve for x
x = 18,628,424,479.97/157,390.36 - Step 6: Final answer
x = 118,358.10
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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.