Finding the Fourth Proportional to 121,583.19, 182,438.97 and 86,272.65
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Solution
The fourth proportional to 121,583.19, 182,438.97 and 86,272.65 is: 129,454.52
Step by Step Solution
- Step 1: Write the proportion equation
121,583.19 : 182,438.97 = 86,272.65 : x - Step 2: Convert to fraction form
121,583.19/182,438.97 = 86,272.65/x - Step 3: Cross multiply
121,583.19x = 182,438.97 × 86,272.65 - Step 4: Simplify right side
121,583.19x = 15,739,493,405.17 - Step 5: Solve for x
x = 15,739,493,405.17/121,583.19 - Step 6: Final answer
x = 129,454.52
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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.