Finding the Fourth Proportional to 118,010.58, 162,914.79 and 79,971.09
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Solution
The fourth proportional to 118,010.58, 162,914.79 and 79,971.09 is: 110,400.89
Step by Step Solution
- Step 1: Write the proportion equation
118,010.58 : 162,914.79 = 79,971.09 : x - Step 2: Convert to fraction form
118,010.58/162,914.79 = 79,971.09/x - Step 3: Cross multiply
118,010.58x = 162,914.79 × 79,971.09 - Step 4: Simplify right side
118,010.58x = 13,028,473,333.42 - Step 5: Solve for x
x = 13,028,473,333.42/118,010.58 - Step 6: Final answer
x = 110,400.89
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1.5x scale
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.