Finding the Fourth Proportional to 125,421.64, 187,984.14 and 55,153.96
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Solution
The fourth proportional to 125,421.64, 187,984.14 and 55,153.96 is: 82,665.72
Step by Step Solution
- Step 1: Write the proportion equation
125,421.64 : 187,984.14 = 55,153.96 : x - Step 2: Convert to fraction form
125,421.64/187,984.14 = 55,153.96/x - Step 3: Cross multiply
125,421.64x = 187,984.14 × 55,153.96 - Step 4: Simplify right side
125,421.64x = 10,368,069,738.19 - Step 5: Solve for x
x = 10,368,069,738.19/125,421.64 - Step 6: Final answer
x = 82,665.72
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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.