Finding the Fourth Proportional to 112,381.36, 168,302.74 and 81,904.81
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Solution
The fourth proportional to 112,381.36, 168,302.74 and 81,904.81 is: 122,660.95
Step by Step Solution
- Step 1: Write the proportion equation
112,381.36 : 168,302.74 = 81,904.81 : x - Step 2: Convert to fraction form
112,381.36/168,302.74 = 81,904.81/x - Step 3: Cross multiply
112,381.36x = 168,302.74 × 81,904.81 - Step 4: Simplify right side
112,381.36x = 13,784,803,942.18 - Step 5: Solve for x
x = 13,784,803,942.18/112,381.36 - Step 6: Final answer
x = 122,660.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.