Finding the Fourth Proportional to 144,721.37, 216,708.19 and 99,881.09
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Solution
The fourth proportional to 144,721.37, 216,708.19 and 99,881.09 is: 149,563.61
Step by Step Solution
- Step 1: Write the proportion equation
144,721.37 : 216,708.19 = 99,881.09 : x - Step 2: Convert to fraction form
144,721.37/216,708.19 = 99,881.09/x - Step 3: Cross multiply
144,721.37x = 216,708.19 × 99,881.09 - Step 4: Simplify right side
144,721.37x = 21,645,050,229.13 - Step 5: Solve for x
x = 21,645,050,229.13/144,721.37 - Step 6: Final answer
x = 149,563.61
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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.