Finding the Fourth Proportional to 139,368.02, 192,407.64 and 91,759.76
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Solution
The fourth proportional to 139,368.02, 192,407.64 and 91,759.76 is: 126,680.99
Step by Step Solution
- Step 1: Write the proportion equation
139,368.02 : 192,407.64 = 91,759.76 : x - Step 2: Convert to fraction form
139,368.02/192,407.64 = 91,759.76/x - Step 3: Cross multiply
139,368.02x = 192,407.64 × 91,759.76 - Step 4: Simplify right side
139,368.02x = 17,655,278,868.57 - Step 5: Solve for x
x = 17,655,278,868.57/139,368.02 - Step 6: Final answer
x = 126,680.99
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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.