Finding the Fourth Proportional to 128,193.93, 192,309.12 and 39,454.83
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Solution
The fourth proportional to 128,193.93, 192,309.12 and 39,454.83 is: 59,187.85
Step by Step Solution
- Step 1: Write the proportion equation
128,193.93 : 192,309.12 = 39,454.83 : x - Step 2: Convert to fraction form
128,193.93/192,309.12 = 39,454.83/x - Step 3: Cross multiply
128,193.93x = 192,309.12 × 39,454.83 - Step 4: Simplify right side
128,193.93x = 7,587,523,637.05 - Step 5: Solve for x
x = 7,587,523,637.05/128,193.93 - Step 6: Final answer
x = 59,187.85
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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.