Finding the Fourth Proportional to 122,991.14, 169,728.71 and 69,271.13
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Solution
The fourth proportional to 122,991.14, 169,728.71 and 69,271.13 is: 95,594.68
Step by Step Solution
- Step 1: Write the proportion equation
122,991.14 : 169,728.71 = 69,271.13 : x - Step 2: Convert to fraction form
122,991.14/169,728.71 = 69,271.13/x - Step 3: Cross multiply
122,991.14x = 169,728.71 × 69,271.13 - Step 4: Simplify right side
122,991.14x = 11,757,298,340.14 - Step 5: Solve for x
x = 11,757,298,340.14/122,991.14 - Step 6: Final answer
x = 95,594.68
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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.