Finding the Fourth Proportional to 122,721.87, 169,349.99 and 69,003.68
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Solution
The fourth proportional to 122,721.87, 169,349.99 and 69,003.68 is: 95,221.60
Step by Step Solution
- Step 1: Write the proportion equation
122,721.87 : 169,349.99 = 69,003.68 : x - Step 2: Convert to fraction form
122,721.87/169,349.99 = 69,003.68/x - Step 3: Cross multiply
122,721.87x = 169,349.99 × 69,003.68 - Step 4: Simplify right side
122,721.87x = 11,685,772,666.93 - Step 5: Solve for x
x = 11,685,772,666.93/122,721.87 - Step 6: Final answer
x = 95,221.60
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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.