Finding the Fourth Proportional to 135,930.68, 204,020.55 and 72,822.05
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Solution
The fourth proportional to 135,930.68, 204,020.55 and 72,822.05 is: 109,299.79
Step by Step Solution
- Step 1: Write the proportion equation
135,930.68 : 204,020.55 = 72,822.05 : x - Step 2: Convert to fraction form
135,930.68/204,020.55 = 72,822.05/x - Step 3: Cross multiply
135,930.68x = 204,020.55 × 72,822.05 - Step 4: Simplify right side
135,930.68x = 14,857,194,693.13 - Step 5: Solve for x
x = 14,857,194,693.13/135,930.68 - Step 6: Final answer
x = 109,299.79
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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.