Finding the Fourth Proportional to 121,906.08, 167,856.36 and 106,713.72
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Solution
The fourth proportional to 121,906.08, 167,856.36 and 106,713.72 is: 146,937.52
Step by Step Solution
- Step 1: Write the proportion equation
121,906.08 : 167,856.36 = 106,713.72 : x - Step 2: Convert to fraction form
121,906.08/167,856.36 = 106,713.72/x - Step 3: Cross multiply
121,906.08x = 167,856.36 × 106,713.72 - Step 4: Simplify right side
121,906.08x = 17,912,576,601.26 - Step 5: Solve for x
x = 17,912,576,601.26/121,906.08 - Step 6: Final answer
x = 146,937.52
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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.