Finding the Fourth Proportional to 127,125.64, 175,413.90 and 76,126.42
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Solution
The fourth proportional to 127,125.64, 175,413.90 and 76,126.42 is: 105,042.79
Step by Step Solution
- Step 1: Write the proportion equation
127,125.64 : 175,413.90 = 76,126.42 : x - Step 2: Convert to fraction form
127,125.64/175,413.90 = 76,126.42/x - Step 3: Cross multiply
127,125.64x = 175,413.90 × 76,126.42 - Step 4: Simplify right side
127,125.64x = 13,353,632,225.24 - Step 5: Solve for x
x = 13,353,632,225.24/127,125.64 - Step 6: Final answer
x = 105,042.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.