Finding the Fourth Proportional to 128,035.40, 192,053.10 and 120,777.80
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Solution
The fourth proportional to 128,035.40, 192,053.10 and 120,777.80 is: 181,166.70
Step by Step Solution
- Step 1: Write the proportion equation
128,035.40 : 192,053.10 = 120,777.80 : x - Step 2: Convert to fraction form
128,035.40/192,053.10 = 120,777.80/x - Step 3: Cross multiply
128,035.40x = 192,053.10 × 120,777.80 - Step 4: Simplify right side
128,035.40x = 23,195,750,901.18 - Step 5: Solve for x
x = 23,195,750,901.18/128,035.40 - Step 6: Final answer
x = 181,166.70
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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.