Finding the Fourth Proportional to 121,631.13, 167,849.37 and 67,917.06
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Solution
The fourth proportional to 121,631.13, 167,849.37 and 67,917.06 is: 93,724.66
Step by Step Solution
- Step 1: Write the proportion equation
121,631.13 : 167,849.37 = 67,917.06 : x - Step 2: Convert to fraction form
121,631.13/167,849.37 = 67,917.06/x - Step 3: Cross multiply
121,631.13x = 167,849.37 × 67,917.06 - Step 4: Simplify right side
121,631.13x = 11,399,835,733.25 - Step 5: Solve for x
x = 11,399,835,733.25/121,631.13 - Step 6: Final answer
x = 93,724.66
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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.