Finding the Fourth Proportional to 122,686.28, 183,701.04 and 72,043.52
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Solution
The fourth proportional to 122,686.28, 183,701.04 and 72,043.52 is: 107,872.45
Step by Step Solution
- Step 1: Write the proportion equation
122,686.28 : 183,701.04 = 72,043.52 : x - Step 2: Convert to fraction form
122,686.28/183,701.04 = 72,043.52/x - Step 3: Cross multiply
122,686.28x = 183,701.04 × 72,043.52 - Step 4: Simplify right side
122,686.28x = 13,234,469,549.26 - Step 5: Solve for x
x = 13,234,469,549.26/122,686.28 - Step 6: Final answer
x = 107,872.45
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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.