Finding the Fourth Proportional to 122,137.48, 168,518.26 and 71,827.08
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Solution
The fourth proportional to 122,137.48, 168,518.26 and 71,827.08 is: 99,102.87
Step by Step Solution
- Step 1: Write the proportion equation
122,137.48 : 168,518.26 = 71,827.08 : x - Step 2: Convert to fraction form
122,137.48/168,518.26 = 71,827.08/x - Step 3: Cross multiply
122,137.48x = 168,518.26 × 71,827.08 - Step 4: Simplify right side
122,137.48x = 12,104,174,542.48 - Step 5: Solve for x
x = 12,104,174,542.48/122,137.48 - Step 6: Final answer
x = 99,102.87
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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.