Finding the Fourth Proportional to 122,683.21, 169,289.92 and 68,226.55
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Solution
The fourth proportional to 122,683.21, 169,289.92 and 68,226.55 is: 94,145.46
Step by Step Solution
- Step 1: Write the proportion equation
122,683.21 : 169,289.92 = 68,226.55 : x - Step 2: Convert to fraction form
122,683.21/169,289.92 = 68,226.55/x - Step 3: Cross multiply
122,683.21x = 169,289.92 × 68,226.55 - Step 4: Simplify right side
122,683.21x = 11,550,067,421.92 - Step 5: Solve for x
x = 11,550,067,421.92/122,683.21 - Step 6: Final answer
x = 94,145.46
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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.