Finding the Fourth Proportional to 186,861.68, 280,379.99 and 81,666.98
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Solution
The fourth proportional to 186,861.68, 280,379.99 and 81,666.98 is: 122,538.70
Step by Step Solution
- Step 1: Write the proportion equation
186,861.68 : 280,379.99 = 81,666.98 : x - Step 2: Convert to fraction form
186,861.68/280,379.99 = 81,666.98/x - Step 3: Cross multiply
186,861.68x = 280,379.99 × 81,666.98 - Step 4: Simplify right side
186,861.68x = 22,897,785,838.00 - Step 5: Solve for x
x = 22,897,785,838.00/186,861.68 - Step 6: Final answer
x = 122,538.70
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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.