Finding the Fourth Proportional to 123,652.45, 185,286.84 and 85,775.68
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Solution
The fourth proportional to 123,652.45, 185,286.84 and 85,775.68 is: 128,530.45
Step by Step Solution
- Step 1: Write the proportion equation
123,652.45 : 185,286.84 = 85,775.68 : x - Step 2: Convert to fraction form
123,652.45/185,286.84 = 85,775.68/x - Step 3: Cross multiply
123,652.45x = 185,286.84 × 85,775.68 - Step 4: Simplify right side
123,652.45x = 15,893,104,696.05 - Step 5: Solve for x
x = 15,893,104,696.05/123,652.45 - Step 6: Final answer
x = 128,530.45
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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.