Finding the Fourth Proportional to 124,778.71, 172,194.69 and 68,190.08
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Solution
The fourth proportional to 124,778.71, 172,194.69 and 68,190.08 is: 94,102.35
Step by Step Solution
- Step 1: Write the proportion equation
124,778.71 : 172,194.69 = 68,190.08 : x - Step 2: Convert to fraction form
124,778.71/172,194.69 = 68,190.08/x - Step 3: Cross multiply
124,778.71x = 172,194.69 × 68,190.08 - Step 4: Simplify right side
124,778.71x = 11,741,969,345.72 - Step 5: Solve for x
x = 11,741,969,345.72/124,778.71 - Step 6: Final answer
x = 94,102.35
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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.