Finding the Fourth Proportional to 121,569.54, 167,565.12 and 81,268.62
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Solution
The fourth proportional to 121,569.54, 167,565.12 and 81,268.62 is: 112,016.43
Step by Step Solution
- Step 1: Write the proportion equation
121,569.54 : 167,565.12 = 81,268.62 : x - Step 2: Convert to fraction form
121,569.54/167,565.12 = 81,268.62/x - Step 3: Cross multiply
121,569.54x = 167,565.12 × 81,268.62 - Step 4: Simplify right side
121,569.54x = 13,617,786,062.53 - Step 5: Solve for x
x = 13,617,786,062.53/121,569.54 - Step 6: Final answer
x = 112,016.43
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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.