Finding the Fourth Proportional to 131,122.13, 180,950.69 and 71,506.13
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Solution
The fourth proportional to 131,122.13, 180,950.69 and 71,506.13 is: 98,679.63
Step by Step Solution
- Step 1: Write the proportion equation
131,122.13 : 180,950.69 = 71,506.13 : x - Step 2: Convert to fraction form
131,122.13/180,950.69 = 71,506.13/x - Step 3: Cross multiply
131,122.13x = 180,950.69 × 71,506.13 - Step 4: Simplify right side
131,122.13x = 12,939,082,836.74 - Step 5: Solve for x
x = 12,939,082,836.74/131,122.13 - Step 6: Final answer
x = 98,679.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.