Finding the Fourth Proportional to 135,633.74, 187,137.47 and 81,163.99
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Solution
The fourth proportional to 135,633.74, 187,137.47 and 81,163.99 is: 111,984.10
Step by Step Solution
- Step 1: Write the proportion equation
135,633.74 : 187,137.47 = 81,163.99 : x - Step 2: Convert to fraction form
135,633.74/187,137.47 = 81,163.99/x - Step 3: Cross multiply
135,633.74x = 187,137.47 × 81,163.99 - Step 4: Simplify right side
135,633.74x = 15,188,822,402.20 - Step 5: Solve for x
x = 15,188,822,402.20/135,633.74 - Step 6: Final answer
x = 111,984.10
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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.