Finding the Fourth Proportional to 171,415.88, 257,025.36 and 91,355.28
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Solution
The fourth proportional to 171,415.88, 257,025.36 and 91,355.28 is: 136,980.45
Step by Step Solution
- Step 1: Write the proportion equation
171,415.88 : 257,025.36 = 91,355.28 : x - Step 2: Convert to fraction form
171,415.88/257,025.36 = 91,355.28/x - Step 3: Cross multiply
171,415.88x = 257,025.36 × 91,355.28 - Step 4: Simplify right side
171,415.88x = 23,480,623,729.90 - Step 5: Solve for x
x = 23,480,623,729.90/171,415.88 - Step 6: Final answer
x = 136,980.45
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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.