Finding the Fourth Proportional to 145,037.68, 217,621.80 and 78,399.80
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Solution
The fourth proportional to 145,037.68, 217,621.80 and 78,399.80 is: 117,634.99
Step by Step Solution
- Step 1: Write the proportion equation
145,037.68 : 217,621.80 = 78,399.80 : x - Step 2: Convert to fraction form
145,037.68/217,621.80 = 78,399.80/x - Step 3: Cross multiply
145,037.68x = 217,621.80 × 78,399.80 - Step 4: Simplify right side
145,037.68x = 17,061,505,595.64 - Step 5: Solve for x
x = 17,061,505,595.64/145,037.68 - Step 6: Final answer
x = 117,634.99
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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.