Finding the Fourth Proportional to 129,977.13, 194,965.70 and 46,871.13
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Solution
The fourth proportional to 129,977.13, 194,965.70 and 46,871.13 is: 70,306.70
Step by Step Solution
- Step 1: Write the proportion equation
129,977.13 : 194,965.70 = 46,871.13 : x - Step 2: Convert to fraction form
129,977.13/194,965.70 = 46,871.13/x - Step 3: Cross multiply
129,977.13x = 194,965.70 × 46,871.13 - Step 4: Simplify right side
129,977.13x = 9,138,262,670.24 - Step 5: Solve for x
x = 9,138,262,670.24/129,977.13 - Step 6: Final answer
x = 70,306.70
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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.