Finding the Fourth Proportional to 171,640.80, 257,461.20 and 115,507.80
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Solution
The fourth proportional to 171,640.80, 257,461.20 and 115,507.80 is: 173,261.70
Step by Step Solution
- Step 1: Write the proportion equation
171,640.80 : 257,461.20 = 115,507.80 : x - Step 2: Convert to fraction form
171,640.80/257,461.20 = 115,507.80/x - Step 3: Cross multiply
171,640.80x = 257,461.20 × 115,507.80 - Step 4: Simplify right side
171,640.80x = 29,738,776,797.36 - Step 5: Solve for x
x = 29,738,776,797.36/171,640.80 - Step 6: Final answer
x = 173,261.70
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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.