Finding the Fourth Proportional to 128,210.26, 192,337.26 and 39,461.80
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Solution
The fourth proportional to 128,210.26, 192,337.26 and 39,461.80 is: 59,199.43
Step by Step Solution
- Step 1: Write the proportion equation
128,210.26 : 192,337.26 = 39,461.80 : x - Step 2: Convert to fraction form
128,210.26/192,337.26 = 39,461.80/x - Step 3: Cross multiply
128,210.26x = 192,337.26 × 39,461.80 - Step 4: Simplify right side
128,210.26x = 7,589,974,486.67 - Step 5: Solve for x
x = 7,589,974,486.67/128,210.26 - Step 6: Final answer
x = 59,199.43
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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.