Finding the Fourth Proportional to 103,791.80, 155,687.70 and 51,303.80
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Solution
The fourth proportional to 103,791.80, 155,687.70 and 51,303.80 is: 76,955.70
Step by Step Solution
- Step 1: Write the proportion equation
103,791.80 : 155,687.70 = 51,303.80 : x - Step 2: Convert to fraction form
103,791.80/155,687.70 = 51,303.80/x - Step 3: Cross multiply
103,791.80x = 155,687.70 × 51,303.80 - Step 4: Simplify right side
103,791.80x = 7,987,370,623.26 - Step 5: Solve for x
x = 7,987,370,623.26/103,791.80 - Step 6: Final answer
x = 76,955.70
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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.