Finding the Fourth Proportional to 117,373.76, 161,751.84 and 83,781.44
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Solution
The fourth proportional to 117,373.76, 161,751.84 and 83,781.44 is: 115,458.53
Step by Step Solution
- Step 1: Write the proportion equation
117,373.76 : 161,751.84 = 83,781.44 : x - Step 2: Convert to fraction form
117,373.76/161,751.84 = 83,781.44/x - Step 3: Cross multiply
117,373.76x = 161,751.84 × 83,781.44 - Step 4: Simplify right side
117,373.76x = 13,551,802,077.85 - Step 5: Solve for x
x = 13,551,802,077.85/117,373.76 - Step 6: Final answer
x = 115,458.53
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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.