Finding the Fourth Proportional to 103,566.80, 155,122.56 and 85,593.80
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Solution
The fourth proportional to 103,566.80, 155,122.56 and 85,593.80 is: 128,202.56
Step by Step Solution
- Step 1: Write the proportion equation
103,566.80 : 155,122.56 = 85,593.80 : x - Step 2: Convert to fraction form
103,566.80/155,122.56 = 85,593.80/x - Step 3: Cross multiply
103,566.80x = 155,122.56 × 85,593.80 - Step 4: Simplify right side
103,566.80x = 13,277,529,376.13 - Step 5: Solve for x
x = 13,277,529,376.13/103,566.80 - Step 6: Final answer
x = 128,202.56
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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.