Finding the Fourth Proportional to 139,518.23, 192,541.74 and 79,090.05
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Solution
The fourth proportional to 139,518.23, 192,541.74 and 79,090.05 is: 109,148.00
Step by Step Solution
- Step 1: Write the proportion equation
139,518.23 : 192,541.74 = 79,090.05 : x - Step 2: Convert to fraction form
139,518.23/192,541.74 = 79,090.05/x - Step 3: Cross multiply
139,518.23x = 192,541.74 × 79,090.05 - Step 4: Simplify right side
139,518.23x = 15,228,135,843.69 - Step 5: Solve for x
x = 15,228,135,843.69/139,518.23 - Step 6: Final answer
x = 109,148.00
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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.