Finding the Fourth Proportional to 122,021.11, 168,392.65 and 68,305.81
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Solution
The fourth proportional to 122,021.11, 168,392.65 and 68,305.81 is: 94,263.99
Step by Step Solution
- Step 1: Write the proportion equation
122,021.11 : 168,392.65 = 68,305.81 : x - Step 2: Convert to fraction form
122,021.11/168,392.65 = 68,305.81/x - Step 3: Cross multiply
122,021.11x = 168,392.65 × 68,305.81 - Step 4: Simplify right side
122,021.11x = 11,502,196,356.30 - Step 5: Solve for x
x = 11,502,196,356.30/122,021.11 - Step 6: Final answer
x = 94,263.99
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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.