Finding the Fourth Proportional to 122,486.86, 169,018.81 and 68,777.74
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Solution
The fourth proportional to 122,486.86, 169,018.81 and 68,777.74 is: 94,905.95
Step by Step Solution
- Step 1: Write the proportion equation
122,486.86 : 169,018.81 = 68,777.74 : x - Step 2: Convert to fraction form
122,486.86/169,018.81 = 68,777.74/x - Step 3: Cross multiply
122,486.86x = 169,018.81 × 68,777.74 - Step 4: Simplify right side
122,486.86x = 11,624,731,769.29 - Step 5: Solve for x
x = 11,624,731,769.29/122,486.86 - Step 6: Final answer
x = 94,905.95
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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.