Finding the Fourth Proportional to 139,551.12, 192,777.84 and 108,125.28
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Solution
The fourth proportional to 139,551.12, 192,777.84 and 108,125.28 is: 149,365.75
Step by Step Solution
- Step 1: Write the proportion equation
139,551.12 : 192,777.84 = 108,125.28 : x - Step 2: Convert to fraction form
139,551.12/192,777.84 = 108,125.28/x - Step 3: Cross multiply
139,551.12x = 192,777.84 × 108,125.28 - Step 4: Simplify right side
139,551.12x = 20,844,157,927.80 - Step 5: Solve for x
x = 20,844,157,927.80/139,551.12 - Step 6: Final answer
x = 149,365.75
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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.