Finding the Fourth Proportional to 128,855.99, 193,025.65 and 102,247.03
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Solution
The fourth proportional to 128,855.99, 193,025.65 and 102,247.03 is: 153,165.56
Step by Step Solution
- Step 1: Write the proportion equation
128,855.99 : 193,025.65 = 102,247.03 : x - Step 2: Convert to fraction form
128,855.99/193,025.65 = 102,247.03/x - Step 3: Cross multiply
128,855.99x = 193,025.65 × 102,247.03 - Step 4: Simplify right side
128,855.99x = 19,736,299,715.23 - Step 5: Solve for x
x = 19,736,299,715.23/128,855.99 - Step 6: Final answer
x = 153,165.56
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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.