Finding the Fourth Proportional to 157,239.07, 216,961.08 and 92,728.55
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Solution
The fourth proportional to 157,239.07, 216,961.08 and 92,728.55 is: 127,948.39
Step by Step Solution
- Step 1: Write the proportion equation
157,239.07 : 216,961.08 = 92,728.55 : x - Step 2: Convert to fraction form
157,239.07/216,961.08 = 92,728.55/x - Step 3: Cross multiply
157,239.07x = 216,961.08 × 92,728.55 - Step 4: Simplify right side
157,239.07x = 20,118,485,850.70 - Step 5: Solve for x
x = 20,118,485,850.70/157,239.07 - Step 6: Final answer
x = 127,948.39
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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.