Finding the Fourth Proportional to 122,739.84, 169,323.84 and 77,397.12
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Solution
The fourth proportional to 122,739.84, 169,323.84 and 77,397.12 is: 106,771.99
Step by Step Solution
- Step 1: Write the proportion equation
122,739.84 : 169,323.84 = 77,397.12 : x - Step 2: Convert to fraction form
122,739.84/169,323.84 = 77,397.12/x - Step 3: Cross multiply
122,739.84x = 169,323.84 × 77,397.12 - Step 4: Simplify right side
122,739.84x = 13,105,177,563.34 - Step 5: Solve for x
x = 13,105,177,563.34/122,739.84 - Step 6: Final answer
x = 106,771.99
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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.