Finding the Fourth Proportional to 129,855.60, 194,455.35 and 103,611.60
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Solution
The fourth proportional to 129,855.60, 194,455.35 and 103,611.60 is: 155,155.65
Step by Step Solution
- Step 1: Write the proportion equation
129,855.60 : 194,455.35 = 103,611.60 : x - Step 2: Convert to fraction form
129,855.60/194,455.35 = 103,611.60/x - Step 3: Cross multiply
129,855.60x = 194,455.35 × 103,611.60 - Step 4: Simplify right side
129,855.60x = 20,147,829,942.06 - Step 5: Solve for x
x = 20,147,829,942.06/129,855.60 - Step 6: Final answer
x = 155,155.65
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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.