Finding the Fourth Proportional to 122,481.20, 169,011.48 and 68,772.14
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Solution
The fourth proportional to 122,481.20, 169,011.48 and 68,772.14 is: 94,898.49
Step by Step Solution
- Step 1: Write the proportion equation
122,481.20 : 169,011.48 = 68,772.14 : x - Step 2: Convert to fraction form
122,481.20/169,011.48 = 68,772.14/x - Step 3: Cross multiply
122,481.20x = 169,011.48 × 68,772.14 - Step 4: Simplify right side
122,481.20x = 11,623,281,164.17 - Step 5: Solve for x
x = 11,623,281,164.17/122,481.20 - Step 6: Final answer
x = 94,898.49
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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.