Finding the Fourth Proportional to 117,122.94, 161,612.28 and 71,158.68
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Solution
The fourth proportional to 117,122.94, 161,612.28 and 71,158.68 is: 98,188.42
Step by Step Solution
- Step 1: Write the proportion equation
117,122.94 : 161,612.28 = 71,158.68 : x - Step 2: Convert to fraction form
117,122.94/161,612.28 = 71,158.68/x - Step 3: Cross multiply
117,122.94x = 161,612.28 × 71,158.68 - Step 4: Simplify right side
117,122.94x = 11,500,116,516.59 - Step 5: Solve for x
x = 11,500,116,516.59/117,122.94 - Step 6: Final answer
x = 98,188.42
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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.