Finding the Fourth Proportional to 189,383.90, 261,349.62 and 121,400.84
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Solution
The fourth proportional to 189,383.90, 261,349.62 and 121,400.84 is: 167,533.06
Step by Step Solution
- Step 1: Write the proportion equation
189,383.90 : 261,349.62 = 121,400.84 : x - Step 2: Convert to fraction form
189,383.90/261,349.62 = 121,400.84/x - Step 3: Cross multiply
189,383.90x = 261,349.62 × 121,400.84 - Step 4: Simplify right side
189,383.90x = 31,728,063,401.68 - Step 5: Solve for x
x = 31,728,063,401.68/189,383.90 - Step 6: Final answer
x = 167,533.06
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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.