Finding the Fourth Proportional to 201,909.05, 278,634.89 and 121,337.81
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Solution
The fourth proportional to 201,909.05, 278,634.89 and 121,337.81 is: 167,446.42
Step by Step Solution
- Step 1: Write the proportion equation
201,909.05 : 278,634.89 = 121,337.81 : x - Step 2: Convert to fraction form
201,909.05/278,634.89 = 121,337.81/x - Step 3: Cross multiply
201,909.05x = 278,634.89 × 121,337.81 - Step 4: Simplify right side
201,909.05x = 33,808,947,342.19 - Step 5: Solve for x
x = 33,808,947,342.19/201,909.05 - Step 6: Final answer
x = 167,446.42
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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.