Finding the Fourth Proportional to 171,515.55, 257,107.28 and 76,692.09
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Solution
The fourth proportional to 171,515.55, 257,107.28 and 76,692.09 is: 114,963.89
Step by Step Solution
- Step 1: Write the proportion equation
171,515.55 : 257,107.28 = 76,692.09 : x - Step 2: Convert to fraction form
171,515.55/257,107.28 = 76,692.09/x - Step 3: Cross multiply
171,515.55x = 257,107.28 × 76,692.09 - Step 4: Simplify right side
171,515.55x = 19,718,094,273.95 - Step 5: Solve for x
x = 19,718,094,273.95/171,515.55 - Step 6: Final answer
x = 114,963.89
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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.