Finding the Fourth Proportional to 145,231.32, 217,869.12 and 74,115.18
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Solution
The fourth proportional to 145,231.32, 217,869.12 and 74,115.18 is: 111,184.07
Step by Step Solution
- Step 1: Write the proportion equation
145,231.32 : 217,869.12 = 74,115.18 : x - Step 2: Convert to fraction form
145,231.32/217,869.12 = 74,115.18/x - Step 3: Cross multiply
145,231.32x = 217,869.12 × 74,115.18 - Step 4: Simplify right side
145,231.32x = 16,147,409,045.24 - Step 5: Solve for x
x = 16,147,409,045.24/145,231.32 - Step 6: Final answer
x = 111,184.07
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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.