Finding the Fourth Proportional to 117,138.60, 161,649.36 and 63,423.18
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Solution
The fourth proportional to 117,138.60, 161,649.36 and 63,423.18 is: 87,522.96
Step by Step Solution
- Step 1: Write the proportion equation
117,138.60 : 161,649.36 = 63,423.18 : x - Step 2: Convert to fraction form
117,138.60/161,649.36 = 63,423.18/x - Step 3: Cross multiply
117,138.60x = 161,649.36 × 63,423.18 - Step 4: Simplify right side
117,138.60x = 10,252,316,456.16 - Step 5: Solve for x
x = 10,252,316,456.16/117,138.60 - Step 6: Final answer
x = 87,522.96
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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.