Finding the Fourth Proportional to 121,718.36, 167,951.76 and 68,000.60
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Solution
The fourth proportional to 121,718.36, 167,951.76 and 68,000.60 is: 93,829.89
Step by Step Solution
- Step 1: Write the proportion equation
121,718.36 : 167,951.76 = 68,000.60 : x - Step 2: Convert to fraction form
121,718.36/167,951.76 = 68,000.60/x - Step 3: Cross multiply
121,718.36x = 167,951.76 × 68,000.60 - Step 4: Simplify right side
121,718.36x = 11,420,820,451.06 - Step 5: Solve for x
x = 11,420,820,451.06/121,718.36 - Step 6: Final answer
x = 93,829.89
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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.