Finding the Fourth Proportional to 139,703.94, 192,795.56 and 98,940.99
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Solution
The fourth proportional to 139,703.94, 192,795.56 and 98,940.99 is: 136,541.49
Step by Step Solution
- Step 1: Write the proportion equation
139,703.94 : 192,795.56 = 98,940.99 : x - Step 2: Convert to fraction form
139,703.94/192,795.56 = 98,940.99/x - Step 3: Cross multiply
139,703.94x = 192,795.56 × 98,940.99 - Step 4: Simplify right side
139,703.94x = 19,075,384,544.34 - Step 5: Solve for x
x = 19,075,384,544.34/139,703.94 - Step 6: Final answer
x = 136,541.49
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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.