Finding the Fourth Proportional to 112,639.86, 169,152.71 and 100,017.99
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Solution
The fourth proportional to 112,639.86, 169,152.71 and 100,017.99 is: 150,198.28
Step by Step Solution
- Step 1: Write the proportion equation
112,639.86 : 169,152.71 = 100,017.99 : x - Step 2: Convert to fraction form
112,639.86/169,152.71 = 100,017.99/x - Step 3: Cross multiply
112,639.86x = 169,152.71 × 100,017.99 - Step 4: Simplify right side
112,639.86x = 16,918,313,557.16 - Step 5: Solve for x
x = 16,918,313,557.16/112,639.86 - Step 6: Final answer
x = 150,198.28
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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.