Finding the Fourth Proportional to 115,705.13, 173,378.17 and 80,235.63
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Solution
The fourth proportional to 115,705.13, 173,378.17 and 80,235.63 is: 120,228.95
Step by Step Solution
- Step 1: Write the proportion equation
115,705.13 : 173,378.17 = 80,235.63 : x - Step 2: Convert to fraction form
115,705.13/173,378.17 = 80,235.63/x - Step 3: Cross multiply
115,705.13x = 173,378.17 × 80,235.63 - Step 4: Simplify right side
115,705.13x = 13,911,106,698.20 - Step 5: Solve for x
x = 13,911,106,698.20/115,705.13 - Step 6: Final answer
x = 120,228.95
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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.