Finding the Fourth Proportional to 133,138.09, 183,930.99 and 87,306.77
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Solution
The fourth proportional to 133,138.09, 183,930.99 and 87,306.77 is: 120,614.77
Step by Step Solution
- Step 1: Write the proportion equation
133,138.09 : 183,930.99 = 87,306.77 : x - Step 2: Convert to fraction form
133,138.09/183,930.99 = 87,306.77/x - Step 3: Cross multiply
133,138.09x = 183,930.99 × 87,306.77 - Step 4: Simplify right side
133,138.09x = 16,058,420,772.23 - Step 5: Solve for x
x = 16,058,420,772.23/133,138.09 - Step 6: Final answer
x = 120,614.77
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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.