Finding the Fourth Proportional to 171,420.80, 236,311.84 and 120,274.08
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Solution
The fourth proportional to 171,420.80, 236,311.84 and 120,274.08 is: 165,803.62
Step by Step Solution
- Step 1: Write the proportion equation
171,420.80 : 236,311.84 = 120,274.08 : x - Step 2: Convert to fraction form
171,420.80/236,311.84 = 120,274.08/x - Step 3: Cross multiply
171,420.80x = 236,311.84 × 120,274.08 - Step 4: Simplify right side
171,420.80x = 28,422,189,149.11 - Step 5: Solve for x
x = 28,422,189,149.11/171,420.80 - Step 6: Final answer
x = 165,803.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.