Finding the Fourth Proportional to 129,980.63, 194,970.95 and 46,874.63
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Solution
The fourth proportional to 129,980.63, 194,970.95 and 46,874.63 is: 70,311.94
Step by Step Solution
- Step 1: Write the proportion equation
129,980.63 : 194,970.95 = 46,874.63 : x - Step 2: Convert to fraction form
129,980.63/194,970.95 = 46,874.63/x - Step 3: Cross multiply
129,980.63x = 194,970.95 × 46,874.63 - Step 4: Simplify right side
129,980.63x = 9,139,189,932.77 - Step 5: Solve for x
x = 9,139,189,932.77/129,980.63 - Step 6: Final answer
x = 70,311.94
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1.5x scale
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.