Finding the Fourth Proportional to 138,341.36, 190,855.63 and 84,532.95
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Solution
The fourth proportional to 138,341.36, 190,855.63 and 84,532.95 is: 116,621.59
Step by Step Solution
- Step 1: Write the proportion equation
138,341.36 : 190,855.63 = 84,532.95 : x - Step 2: Convert to fraction form
138,341.36/190,855.63 = 84,532.95/x - Step 3: Cross multiply
138,341.36x = 190,855.63 × 84,532.95 - Step 4: Simplify right side
138,341.36x = 16,133,589,428.01 - Step 5: Solve for x
x = 16,133,589,428.01/138,341.36 - Step 6: Final answer
x = 116,621.59
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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.