Finding the Fourth Proportional to 133,031.09, 183,586.79 and 72,605.62
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Solution
The fourth proportional to 133,031.09, 183,586.79 and 72,605.62 is: 100,197.88
Step by Step Solution
- Step 1: Write the proportion equation
133,031.09 : 183,586.79 = 72,605.62 : x - Step 2: Convert to fraction form
133,031.09/183,586.79 = 72,605.62/x - Step 3: Cross multiply
133,031.09x = 183,586.79 × 72,605.62 - Step 4: Simplify right side
133,031.09x = 13,329,432,711.76 - Step 5: Solve for x
x = 13,329,432,711.76/133,031.09 - Step 6: Final answer
x = 100,197.88
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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.