Finding the Fourth Proportional to 113,840.80, 170,901.60 and 71,720.80
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Solution
The fourth proportional to 113,840.80, 170,901.60 and 71,720.80 is: 107,669.65
Step by Step Solution
- Step 1: Write the proportion equation
113,840.80 : 170,901.60 = 71,720.80 : x - Step 2: Convert to fraction form
113,840.80/170,901.60 = 71,720.80/x - Step 3: Cross multiply
113,840.80x = 170,901.60 × 71,720.80 - Step 4: Simplify right side
113,840.80x = 12,257,199,473.28 - Step 5: Solve for x
x = 12,257,199,473.28/113,840.80 - Step 6: Final answer
x = 107,669.65
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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.