Finding the Fourth Proportional to 128,173.17, 192,281.63 and 39,424.71
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Solution
The fourth proportional to 128,173.17, 192,281.63 and 39,424.71 is: 59,143.79
Step by Step Solution
- Step 1: Write the proportion equation
128,173.17 : 192,281.63 = 39,424.71 : x - Step 2: Convert to fraction form
128,173.17/192,281.63 = 39,424.71/x - Step 3: Cross multiply
128,173.17x = 192,281.63 × 39,424.71 - Step 4: Simplify right side
128,173.17x = 7,580,647,501.08 - Step 5: Solve for x
x = 7,580,647,501.08/128,173.17 - Step 6: Final answer
x = 59,143.79
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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.