Finding the Fourth Proportional to 127,438.05, 175,791.84 and 79,017.87
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Solution
The fourth proportional to 127,438.05, 175,791.84 and 79,017.87 is: 108,999.60
Step by Step Solution
- Step 1: Write the proportion equation
127,438.05 : 175,791.84 = 79,017.87 : x - Step 2: Convert to fraction form
127,438.05/175,791.84 = 79,017.87/x - Step 3: Cross multiply
127,438.05x = 175,791.84 × 79,017.87 - Step 4: Simplify right side
127,438.05x = 13,890,696,760.18 - Step 5: Solve for x
x = 13,890,696,760.18/127,438.05 - Step 6: Final answer
x = 108,999.60
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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.