Finding the Fourth Proportional to 168,142.08, 252,272.64 and 74,639.36
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Solution
The fourth proportional to 168,142.08, 252,272.64 and 74,639.36 is: 111,985.46
Step by Step Solution
- Step 1: Write the proportion equation
168,142.08 : 252,272.64 = 74,639.36 : x - Step 2: Convert to fraction form
168,142.08/252,272.64 = 74,639.36/x - Step 3: Cross multiply
168,142.08x = 252,272.64 × 74,639.36 - Step 4: Simplify right side
168,142.08x = 18,829,468,395.11 - Step 5: Solve for x
x = 18,829,468,395.11/168,142.08 - Step 6: Final answer
x = 111,985.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.