Finding the Fourth Proportional to 122,032.74, 168,405.21 and 68,317.86
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Solution
The fourth proportional to 122,032.74, 168,405.21 and 68,317.86 is: 94,278.66
Step by Step Solution
- Step 1: Write the proportion equation
122,032.74 : 168,405.21 = 68,317.86 : x - Step 2: Convert to fraction form
122,032.74/168,405.21 = 68,317.86/x - Step 3: Cross multiply
122,032.74x = 168,405.21 × 68,317.86 - Step 4: Simplify right side
122,032.74x = 11,505,083,560.05 - Step 5: Solve for x
x = 11,505,083,560.05/122,032.74 - Step 6: Final answer
x = 94,278.66
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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.