Finding the Fourth Proportional to 133,193.21, 183,805.95 and 72,767.31
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Solution
The fourth proportional to 133,193.21, 183,805.95 and 72,767.31 is: 100,418.52
Step by Step Solution
- Step 1: Write the proportion equation
133,193.21 : 183,805.95 = 72,767.31 : x - Step 2: Convert to fraction form
133,193.21/183,805.95 = 72,767.31/x - Step 3: Cross multiply
133,193.21x = 183,805.95 × 72,767.31 - Step 4: Simplify right side
133,193.21x = 13,375,064,543.49 - Step 5: Solve for x
x = 13,375,064,543.49/133,193.21 - Step 6: Final answer
x = 100,418.52
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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.