Finding the Fourth Proportional to 112,897.41, 155,797.14 and 65,149.74
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Solution
The fourth proportional to 112,897.41, 155,797.14 and 65,149.74 is: 89,905.90
Step by Step Solution
- Step 1: Write the proportion equation
112,897.41 : 155,797.14 = 65,149.74 : x - Step 2: Convert to fraction form
112,897.41/155,797.14 = 65,149.74/x - Step 3: Cross multiply
112,897.41x = 155,797.14 × 65,149.74 - Step 4: Simplify right side
112,897.41x = 10,150,143,163.74 - Step 5: Solve for x
x = 10,150,143,163.74/112,897.41 - Step 6: Final answer
x = 89,905.90
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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.