Finding the Fourth Proportional to 135,740.27, 202,508.23 and 128,391.95
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Solution
The fourth proportional to 135,740.27, 202,508.23 and 128,391.95 is: 191,545.42
Step by Step Solution
- Step 1: Write the proportion equation
135,740.27 : 202,508.23 = 128,391.95 : x - Step 2: Convert to fraction form
135,740.27/202,508.23 = 128,391.95/x - Step 3: Cross multiply
135,740.27x = 202,508.23 × 128,391.95 - Step 4: Simplify right side
135,740.27x = 26,000,426,540.75 - Step 5: Solve for x
x = 26,000,426,540.75/135,740.27 - Step 6: Final answer
x = 191,545.42
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.