Finding the Fourth Proportional to 103,471.74, 142,677.99 and 69,879.42
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Solution
The fourth proportional to 103,471.74, 142,677.99 and 69,879.42 is: 96,357.28
Step by Step Solution
- Step 1: Write the proportion equation
103,471.74 : 142,677.99 = 69,879.42 : x - Step 2: Convert to fraction form
103,471.74/142,677.99 = 69,879.42/x - Step 3: Cross multiply
103,471.74x = 142,677.99 × 69,879.42 - Step 4: Simplify right side
103,471.74x = 9,970,255,187.97 - Step 5: Solve for x
x = 9,970,255,187.97/103,471.74 - Step 6: Final answer
x = 96,357.28
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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.