Finding the Fourth Proportional to 164,415.20, 246,622.80 and 128,985.80
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Solution
The fourth proportional to 164,415.20, 246,622.80 and 128,985.80 is: 193,478.70
Step by Step Solution
- Step 1: Write the proportion equation
164,415.20 : 246,622.80 = 128,985.80 : x - Step 2: Convert to fraction form
164,415.20/246,622.80 = 128,985.80/x - Step 3: Cross multiply
164,415.20x = 246,622.80 × 128,985.80 - Step 4: Simplify right side
164,415.20x = 31,810,839,156.24 - Step 5: Solve for x
x = 31,810,839,156.24/164,415.20 - Step 6: Final answer
x = 193,478.70
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1.5x scale
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.