Finding the Fourth Proportional to 143,310.24, 197,768.77 and 78,783.63
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Solution
The fourth proportional to 143,310.24, 197,768.77 and 78,783.63 is: 108,721.76
Step by Step Solution
- Step 1: Write the proportion equation
143,310.24 : 197,768.77 = 78,783.63 : x - Step 2: Convert to fraction form
143,310.24/197,768.77 = 78,783.63/x - Step 3: Cross multiply
143,310.24x = 197,768.77 × 78,783.63 - Step 4: Simplify right side
143,310.24x = 15,580,940,755.63 - Step 5: Solve for x
x = 15,580,940,755.63/143,310.24 - Step 6: Final answer
x = 108,721.76
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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.