Finding the Fourth Proportional to 121,828.34, 182,618.04 and 69,126.50
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Solution
The fourth proportional to 121,828.34, 182,618.04 and 69,126.50 is: 103,619.12
Step by Step Solution
- Step 1: Write the proportion equation
121,828.34 : 182,618.04 = 69,126.50 : x - Step 2: Convert to fraction form
121,828.34/182,618.04 = 69,126.50/x - Step 3: Cross multiply
121,828.34x = 182,618.04 × 69,126.50 - Step 4: Simplify right side
121,828.34x = 12,623,745,942.06 - Step 5: Solve for x
x = 12,623,745,942.06/121,828.34 - Step 6: Final answer
x = 103,619.12
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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.