Finding the Fourth Proportional to 157,579.40, 217,451.58 and 85,958.84
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Solution
The fourth proportional to 157,579.40, 217,451.58 and 85,958.84 is: 118,618.84
Step by Step Solution
- Step 1: Write the proportion equation
157,579.40 : 217,451.58 = 85,958.84 : x - Step 2: Convert to fraction form
157,579.40/217,451.58 = 85,958.84/x - Step 3: Cross multiply
157,579.40x = 217,451.58 × 85,958.84 - Step 4: Simplify right side
157,579.40x = 18,691,885,572.97 - Step 5: Solve for x
x = 18,691,885,572.97/157,579.40 - Step 6: Final answer
x = 118,618.84
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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.