Finding the Fourth Proportional to 112,343.68, 155,064.16 and 69,878.08
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Solution
The fourth proportional to 112,343.68, 155,064.16 and 69,878.08 is: 96,450.34
Step by Step Solution
- Step 1: Write the proportion equation
112,343.68 : 155,064.16 = 69,878.08 : x - Step 2: Convert to fraction form
112,343.68/155,064.16 = 69,878.08/x - Step 3: Cross multiply
112,343.68x = 155,064.16 × 69,878.08 - Step 4: Simplify right side
112,343.68x = 10,835,585,777.61 - Step 5: Solve for x
x = 10,835,585,777.61/112,343.68 - Step 6: Final answer
x = 96,450.34
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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.