Finding the Fourth Proportional to 131,664.96, 181,725.12 and 121,037.76
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Solution
The fourth proportional to 131,664.96, 181,725.12 and 121,037.76 is: 167,057.37
Step by Step Solution
- Step 1: Write the proportion equation
131,664.96 : 181,725.12 = 121,037.76 : x - Step 2: Convert to fraction form
131,664.96/181,725.12 = 121,037.76/x - Step 3: Cross multiply
131,664.96x = 181,725.12 × 121,037.76 - Step 4: Simplify right side
131,664.96x = 21,995,601,460.53 - Step 5: Solve for x
x = 21,995,601,460.53/131,664.96 - Step 6: Final answer
x = 167,057.37
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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.