Finding the Fourth Proportional to 157,448.20, 217,273.14 and 85,827.08
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Solution
The fourth proportional to 157,448.20, 217,273.14 and 85,827.08 is: 118,438.44
Step by Step Solution
- Step 1: Write the proportion equation
157,448.20 : 217,273.14 = 85,827.08 : x - Step 2: Convert to fraction form
157,448.20/217,273.14 = 85,827.08/x - Step 3: Cross multiply
157,448.20x = 217,273.14 × 85,827.08 - Step 4: Simplify right side
157,448.20x = 18,647,919,168.63 - Step 5: Solve for x
x = 18,647,919,168.63/157,448.20 - Step 6: Final answer
x = 118,438.44
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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.