Finding the Fourth Proportional to 125,115.21, 187,201.89 and 87,748.20
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Solution
The fourth proportional to 125,115.21, 187,201.89 and 87,748.20 is: 131,292.02
Step by Step Solution
- Step 1: Write the proportion equation
125,115.21 : 187,201.89 = 87,748.20 : x - Step 2: Convert to fraction form
125,115.21/187,201.89 = 87,748.20/x - Step 3: Cross multiply
125,115.21x = 187,201.89 × 87,748.20 - Step 4: Simplify right side
125,115.21x = 16,426,628,884.10 - Step 5: Solve for x
x = 16,426,628,884.10/125,115.21 - Step 6: Final answer
x = 131,292.02
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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.