Finding the Fourth Proportional to 128,421.07, 192,370.47 and 104,812.75
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Solution
The fourth proportional to 128,421.07, 192,370.47 and 104,812.75 is: 157,006.00
Step by Step Solution
- Step 1: Write the proportion equation
128,421.07 : 192,370.47 = 104,812.75 : x - Step 2: Convert to fraction form
128,421.07/192,370.47 = 104,812.75/x - Step 3: Cross multiply
128,421.07x = 192,370.47 × 104,812.75 - Step 4: Simplify right side
128,421.07x = 20,162,877,979.49 - Step 5: Solve for x
x = 20,162,877,979.49/128,421.07 - Step 6: Final answer
x = 157,006.00
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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.