Finding the Fourth Proportional to 122,627.36, 169,220.29 and 71,644.80
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Solution
The fourth proportional to 122,627.36, 169,220.29 and 71,644.80 is: 98,866.63
Step by Step Solution
- Step 1: Write the proportion equation
122,627.36 : 169,220.29 = 71,644.80 : x - Step 2: Convert to fraction form
122,627.36/169,220.29 = 71,644.80/x - Step 3: Cross multiply
122,627.36x = 169,220.29 × 71,644.80 - Step 4: Simplify right side
122,627.36x = 12,123,753,832.99 - Step 5: Solve for x
x = 12,123,753,832.99/122,627.36 - Step 6: Final answer
x = 98,866.63
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1.5x scale
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.