Finding the Fourth Proportional to 112,297.45, 154,785.84 and 79,602.81
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Solution
The fourth proportional to 112,297.45, 154,785.84 and 79,602.81 is: 109,720.99
Step by Step Solution
- Step 1: Write the proportion equation
112,297.45 : 154,785.84 = 79,602.81 : x - Step 2: Convert to fraction form
112,297.45/154,785.84 = 79,602.81/x - Step 3: Cross multiply
112,297.45x = 154,785.84 × 79,602.81 - Step 4: Simplify right side
112,297.45x = 12,321,387,812.21 - Step 5: Solve for x
x = 12,321,387,812.21/112,297.45 - Step 6: Final answer
x = 109,720.99
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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.