Finding the Fourth Proportional to 133,137.28, 183,721.92 and 79,482.88
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Solution
The fourth proportional to 133,137.28, 183,721.92 and 79,482.88 is: 109,681.88
Step by Step Solution
- Step 1: Write the proportion equation
133,137.28 : 183,721.92 = 79,482.88 : x - Step 2: Convert to fraction form
133,137.28/183,721.92 = 79,482.88/x - Step 3: Cross multiply
133,137.28x = 183,721.92 × 79,482.88 - Step 4: Simplify right side
133,137.28x = 14,602,747,320.73 - Step 5: Solve for x
x = 14,602,747,320.73/133,137.28 - Step 6: Final answer
x = 109,681.88
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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.