Finding the Fourth Proportional to 100,214.97, 138,262.32 and 57,163.53
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Solution
The fourth proportional to 100,214.97, 138,262.32 and 57,163.53 is: 78,866.08
Step by Step Solution
- Step 1: Write the proportion equation
100,214.97 : 138,262.32 = 57,163.53 : x - Step 2: Convert to fraction form
100,214.97/138,262.32 = 57,163.53/x - Step 3: Cross multiply
100,214.97x = 138,262.32 × 57,163.53 - Step 4: Simplify right side
100,214.97x = 7,903,562,277.19 - Step 5: Solve for x
x = 7,903,562,277.19/100,214.97 - Step 6: Final answer
x = 78,866.08
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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.