Finding the Fourth Proportional to 100,979.40, 151,302.42 and 61,416.84
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Solution
The fourth proportional to 100,979.40, 151,302.42 and 61,416.84 is: 92,023.88
Step by Step Solution
- Step 1: Write the proportion equation
100,979.40 : 151,302.42 = 61,416.84 : x - Step 2: Convert to fraction form
100,979.40/151,302.42 = 61,416.84/x - Step 3: Cross multiply
100,979.40x = 151,302.42 × 61,416.84 - Step 4: Simplify right side
100,979.40x = 9,292,516,520.75 - Step 5: Solve for x
x = 9,292,516,520.75/100,979.40 - Step 6: Final answer
x = 92,023.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.