Finding the Fourth Proportional to 113,554.80, 170,332.20 and 79,729.20
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Solution
The fourth proportional to 113,554.80, 170,332.20 and 79,729.20 is: 119,593.80
Step by Step Solution
- Step 1: Write the proportion equation
113,554.80 : 170,332.20 = 79,729.20 : x - Step 2: Convert to fraction form
113,554.80/170,332.20 = 79,729.20/x - Step 3: Cross multiply
113,554.80x = 170,332.20 × 79,729.20 - Step 4: Simplify right side
113,554.80x = 13,580,450,040.24 - Step 5: Solve for x
x = 13,580,450,040.24/113,554.80 - Step 6: Final answer
x = 119,593.80
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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.