Finding the Fourth Proportional to 135,651.60, 203,428.80 and 69,069.60
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Solution
The fourth proportional to 135,651.60, 203,428.80 and 69,069.60 is: 103,579.65
Step by Step Solution
- Step 1: Write the proportion equation
135,651.60 : 203,428.80 = 69,069.60 : x - Step 2: Convert to fraction form
135,651.60/203,428.80 = 69,069.60/x - Step 3: Cross multiply
135,651.60x = 203,428.80 × 69,069.60 - Step 4: Simplify right side
135,651.60x = 14,050,745,844.48 - Step 5: Solve for x
x = 14,050,745,844.48/135,651.60 - Step 6: Final answer
x = 103,579.65
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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.