Finding the Fourth Proportional to 108,719.04, 149,968.56 and 68,368.80
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Solution
The fourth proportional to 108,719.04, 149,968.56 and 68,368.80 is: 94,308.88
Step by Step Solution
- Step 1: Write the proportion equation
108,719.04 : 149,968.56 = 68,368.80 : x - Step 2: Convert to fraction form
108,719.04/149,968.56 = 68,368.80/x - Step 3: Cross multiply
108,719.04x = 149,968.56 × 68,368.80 - Step 4: Simplify right side
108,719.04x = 10,253,170,484.93 - Step 5: Solve for x
x = 10,253,170,484.93/108,719.04 - Step 6: Final answer
x = 94,308.88
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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.