Finding the Fourth Proportional to 109,910.63, 164,865.68 and 72,197.95
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Solution
The fourth proportional to 109,910.63, 164,865.68 and 72,197.95 is: 108,296.75
Step by Step Solution
- Step 1: Write the proportion equation
109,910.63 : 164,865.68 = 72,197.95 : x - Step 2: Convert to fraction form
109,910.63/164,865.68 = 72,197.95/x - Step 3: Cross multiply
109,910.63x = 164,865.68 × 72,197.95 - Step 4: Simplify right side
109,910.63x = 11,902,963,348.20 - Step 5: Solve for x
x = 11,902,963,348.20/109,910.63 - Step 6: Final answer
x = 108,296.75
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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.