Finding the Fourth Proportional to 122,081.16, 168,480.36 and 68,364.72
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Solution
The fourth proportional to 122,081.16, 168,480.36 and 68,364.72 is: 94,347.99
Step by Step Solution
- Step 1: Write the proportion equation
122,081.16 : 168,480.36 = 68,364.72 : x - Step 2: Convert to fraction form
122,081.16/168,480.36 = 68,364.72/x - Step 3: Cross multiply
122,081.16x = 168,480.36 × 68,364.72 - Step 4: Simplify right side
122,081.16x = 11,518,112,636.90 - Step 5: Solve for x
x = 11,518,112,636.90/122,081.16 - Step 6: Final answer
x = 94,347.99
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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.