Finding the Fourth Proportional to 121,438.26, 180,936.43 and 114,647.63
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Solution
The fourth proportional to 121,438.26, 180,936.43 and 114,647.63 is: 170,818.75
Step by Step Solution
- Step 1: Write the proportion equation
121,438.26 : 180,936.43 = 114,647.63 : x - Step 2: Convert to fraction form
121,438.26/180,936.43 = 114,647.63/x - Step 3: Cross multiply
121,438.26x = 180,936.43 × 114,647.63 - Step 4: Simplify right side
121,438.26x = 20,743,931,688.86 - Step 5: Solve for x
x = 20,743,931,688.86/121,438.26 - Step 6: Final answer
x = 170,818.75
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.