Finding the Fourth Proportional to 133,189.20, 183,798.09 and 72,760.14
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Solution
The fourth proportional to 133,189.20, 183,798.09 and 72,760.14 is: 100,407.35
Step by Step Solution
- Step 1: Write the proportion equation
133,189.20 : 183,798.09 = 72,760.14 : x - Step 2: Convert to fraction form
133,189.20/183,798.09 = 72,760.14/x - Step 3: Cross multiply
133,189.20x = 183,798.09 × 72,760.14 - Step 4: Simplify right side
133,189.20x = 13,373,174,760.13 - Step 5: Solve for x
x = 13,373,174,760.13/133,189.20 - Step 6: Final answer
x = 100,407.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.