Finding the Fourth Proportional to 128,220.06, 192,269.70 and 74,927.43
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Solution
The fourth proportional to 128,220.06, 192,269.70 and 74,927.43 is: 112,355.85
Step by Step Solution
- Step 1: Write the proportion equation
128,220.06 : 192,269.70 = 74,927.43 : x - Step 2: Convert to fraction form
128,220.06/192,269.70 = 74,927.43/x - Step 3: Cross multiply
128,220.06x = 192,269.70 × 74,927.43 - Step 4: Simplify right side
128,220.06x = 14,406,274,487.87 - Step 5: Solve for x
x = 14,406,274,487.87/128,220.06 - Step 6: Final answer
x = 112,355.85
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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.