Finding the Fourth Proportional to 129,526.70, 194,107.80 and 102,918.20
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Solution
The fourth proportional to 129,526.70, 194,107.80 and 102,918.20 is: 154,232.49
Step by Step Solution
- Step 1: Write the proportion equation
129,526.70 : 194,107.80 = 102,918.20 : x - Step 2: Convert to fraction form
129,526.70/194,107.80 = 102,918.20/x - Step 3: Cross multiply
129,526.70x = 194,107.80 × 102,918.20 - Step 4: Simplify right side
129,526.70x = 19,977,225,381.96 - Step 5: Solve for x
x = 19,977,225,381.96/129,526.70 - Step 6: Final answer
x = 154,232.49
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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.