Finding the Fourth Proportional to 107,920.68, 149,128.58 and 102,735.48
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Solution
The fourth proportional to 107,920.68, 149,128.58 and 102,735.48 is: 141,963.49
Step by Step Solution
- Step 1: Write the proportion equation
107,920.68 : 149,128.58 = 102,735.48 : x - Step 2: Convert to fraction form
107,920.68/149,128.58 = 102,735.48/x - Step 3: Cross multiply
107,920.68x = 149,128.58 × 102,735.48 - Step 4: Simplify right side
107,920.68x = 15,320,796,248.02 - Step 5: Solve for x
x = 15,320,796,248.02/107,920.68 - Step 6: Final answer
x = 141,963.49
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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.