Finding the Fourth Proportional to 128,335.80, 192,503.70 and 97,231.80
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Solution
The fourth proportional to 128,335.80, 192,503.70 and 97,231.80 is: 145,847.70
Step by Step Solution
- Step 1: Write the proportion equation
128,335.80 : 192,503.70 = 97,231.80 : x - Step 2: Convert to fraction form
128,335.80/192,503.70 = 97,231.80/x - Step 3: Cross multiply
128,335.80x = 192,503.70 × 97,231.80 - Step 4: Simplify right side
128,335.80x = 18,717,481,257.66 - Step 5: Solve for x
x = 18,717,481,257.66/128,335.80 - Step 6: Final answer
x = 145,847.70
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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.