Finding the Fourth Proportional to 129,985.14, 194,977.68 and 46,879.14
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Solution
The fourth proportional to 129,985.14, 194,977.68 and 46,879.14 is: 70,318.70
Step by Step Solution
- Step 1: Write the proportion equation
129,985.14 : 194,977.68 = 46,879.14 : x - Step 2: Convert to fraction form
129,985.14/194,977.68 = 46,879.14/x - Step 3: Cross multiply
129,985.14x = 194,977.68 × 46,879.14 - Step 4: Simplify right side
129,985.14x = 9,140,385,957.60 - Step 5: Solve for x
x = 9,140,385,957.60/129,985.14 - Step 6: Final answer
x = 70,318.70
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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.