Finding the Fourth Proportional to 118,372.49, 163,305.67 and 87,401.95
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Solution
The fourth proportional to 118,372.49, 163,305.67 and 87,401.95 is: 120,578.99
Step by Step Solution
- Step 1: Write the proportion equation
118,372.49 : 163,305.67 = 87,401.95 : x - Step 2: Convert to fraction form
118,372.49/163,305.67 = 87,401.95/x - Step 3: Cross multiply
118,372.49x = 163,305.67 × 87,401.95 - Step 4: Simplify right side
118,372.49x = 14,273,234,412.32 - Step 5: Solve for x
x = 14,273,234,412.32/118,372.49 - Step 6: Final answer
x = 120,578.99
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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.