Finding the Fourth Proportional to 189,545.09, 261,358.98 and 154,981.99
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Solution
The fourth proportional to 189,545.09, 261,358.98 and 154,981.99 is: 213,700.79
Step by Step Solution
- Step 1: Write the proportion equation
189,545.09 : 261,358.98 = 154,981.99 : x - Step 2: Convert to fraction form
189,545.09/261,358.98 = 154,981.99/x - Step 3: Cross multiply
189,545.09x = 261,358.98 × 154,981.99 - Step 4: Simplify right side
189,545.09x = 40,505,934,824.77 - Step 5: Solve for x
x = 40,505,934,824.77/189,545.09 - Step 6: Final answer
x = 213,700.79
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1.5x scale
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.