Finding the Fourth Proportional to 122,135.48, 168,515.50 and 71,825.08
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Solution
The fourth proportional to 122,135.48, 168,515.50 and 71,825.08 is: 99,100.11
Step by Step Solution
- Step 1: Write the proportion equation
122,135.48 : 168,515.50 = 71,825.08 : x - Step 2: Convert to fraction form
122,135.48/168,515.50 = 71,825.08/x - Step 3: Cross multiply
122,135.48x = 168,515.50 × 71,825.08 - Step 4: Simplify right side
122,135.48x = 12,103,639,268.74 - Step 5: Solve for x
x = 12,103,639,268.74/122,135.48 - Step 6: Final answer
x = 99,100.11
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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.