Finding the Fourth Proportional to 122,358.96, 168,859.80 and 68,644.08
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Solution
The fourth proportional to 122,358.96, 168,859.80 and 68,644.08 is: 94,731.32
Step by Step Solution
- Step 1: Write the proportion equation
122,358.96 : 168,859.80 = 68,644.08 : x - Step 2: Convert to fraction form
122,358.96/168,859.80 = 68,644.08/x - Step 3: Cross multiply
122,358.96x = 168,859.80 × 68,644.08 - Step 4: Simplify right side
122,358.96x = 11,591,225,619.98 - Step 5: Solve for x
x = 11,591,225,619.98/122,358.96 - Step 6: Final answer
x = 94,731.32
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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.