Finding the Fourth Proportional to 186,311.05, 257,109.18 and 101,428.09
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Solution
The fourth proportional to 186,311.05, 257,109.18 and 101,428.09 is: 139,970.73
Step by Step Solution
- Step 1: Write the proportion equation
186,311.05 : 257,109.18 = 101,428.09 : x - Step 2: Convert to fraction form
186,311.05/257,109.18 = 101,428.09/x - Step 3: Cross multiply
186,311.05x = 257,109.18 × 101,428.09 - Step 4: Simplify right side
186,311.05x = 26,078,093,048.87 - Step 5: Solve for x
x = 26,078,093,048.87/186,311.05 - Step 6: Final answer
x = 139,970.73
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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.