Finding the Fourth Proportional to 135,068.10, 186,405.20 and 74,650.54
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Solution
The fourth proportional to 135,068.10, 186,405.20 and 74,650.54 is: 103,023.95
Step by Step Solution
- Step 1: Write the proportion equation
135,068.10 : 186,405.20 = 74,650.54 : x - Step 2: Convert to fraction form
135,068.10/186,405.20 = 74,650.54/x - Step 3: Cross multiply
135,068.10x = 186,405.20 × 74,650.54 - Step 4: Simplify right side
135,068.10x = 13,915,248,838.81 - Step 5: Solve for x
x = 13,915,248,838.81/135,068.10 - Step 6: Final answer
x = 103,023.95
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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.