Finding the Fourth Proportional to 142,876.44, 197,176.68 and 79,212.87
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Solution
The fourth proportional to 142,876.44, 197,176.68 and 79,212.87 is: 109,317.75
Step by Step Solution
- Step 1: Write the proportion equation
142,876.44 : 197,176.68 = 79,212.87 : x - Step 2: Convert to fraction form
142,876.44/197,176.68 = 79,212.87/x - Step 3: Cross multiply
142,876.44x = 197,176.68 × 79,212.87 - Step 4: Simplify right side
142,876.44x = 15,618,930,719.87 - Step 5: Solve for x
x = 15,618,930,719.87/142,876.44 - Step 6: Final answer
x = 109,317.75
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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.