Finding the Fourth Proportional to 117,385.36, 161,937.99 and 69,621.28
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Solution
The fourth proportional to 117,385.36, 161,937.99 and 69,621.28 is: 96,045.45
Step by Step Solution
- Step 1: Write the proportion equation
117,385.36 : 161,937.99 = 69,621.28 : x - Step 2: Convert to fraction form
117,385.36/161,937.99 = 69,621.28/x - Step 3: Cross multiply
117,385.36x = 161,937.99 × 69,621.28 - Step 4: Simplify right side
117,385.36x = 11,274,330,144.43 - Step 5: Solve for x
x = 11,274,330,144.43/117,385.36 - Step 6: Final answer
x = 96,045.45
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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.