Finding the Fourth Proportional to 103,403.20, 155,104.80 and 67,973.80
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Solution
The fourth proportional to 103,403.20, 155,104.80 and 67,973.80 is: 101,960.70
Step by Step Solution
- Step 1: Write the proportion equation
103,403.20 : 155,104.80 = 67,973.80 : x - Step 2: Convert to fraction form
103,403.20/155,104.80 = 67,973.80/x - Step 3: Cross multiply
103,403.20x = 155,104.80 × 67,973.80 - Step 4: Simplify right side
103,403.20x = 10,543,062,654.24 - Step 5: Solve for x
x = 10,543,062,654.24/103,403.20 - Step 6: Final answer
x = 101,960.70
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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.