Finding the Fourth Proportional to 128,176.07, 192,264.58 and 39,428.96
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Solution
The fourth proportional to 128,176.07, 192,264.58 and 39,428.96 is: 59,143.59
Step by Step Solution
- Step 1: Write the proportion equation
128,176.07 : 192,264.58 = 39,428.96 : x - Step 2: Convert to fraction form
128,176.07/192,264.58 = 39,428.96/x - Step 3: Cross multiply
128,176.07x = 192,264.58 × 39,428.96 - Step 4: Simplify right side
128,176.07x = 7,580,792,964.18 - Step 5: Solve for x
x = 7,580,792,964.18/128,176.07 - Step 6: Final answer
x = 59,143.59
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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.