Finding the Fourth Proportional to 201,869.64, 278,691.84 and 121,316.76
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Solution
The fourth proportional to 201,869.64, 278,691.84 and 121,316.76 is: 167,484.28
Step by Step Solution
- Step 1: Write the proportion equation
201,869.64 : 278,691.84 = 121,316.76 : x - Step 2: Convert to fraction form
201,869.64/278,691.84 = 121,316.76/x - Step 3: Cross multiply
201,869.64x = 278,691.84 × 121,316.76 - Step 4: Simplify right side
201,869.64x = 33,809,991,067.24 - Step 5: Solve for x
x = 33,809,991,067.24/201,869.64 - Step 6: Final answer
x = 167,484.28
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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.