Finding the Fourth Proportional to 128,400.24, 192,682.71 and 69,276.99
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Solution
The fourth proportional to 128,400.24, 192,682.71 and 69,276.99 is: 103,959.92
Step by Step Solution
- Step 1: Write the proportion equation
128,400.24 : 192,682.71 = 69,276.99 : x - Step 2: Convert to fraction form
128,400.24/192,682.71 = 69,276.99/x - Step 3: Cross multiply
128,400.24x = 192,682.71 × 69,276.99 - Step 4: Simplify right side
128,400.24x = 13,348,478,173.84 - Step 5: Solve for x
x = 13,348,478,173.84/128,400.24 - Step 6: Final answer
x = 103,959.92
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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.