Finding the Fourth Proportional to 100.02, 138.35 and 93.49
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Solution
The fourth proportional to 100.02, 138.35 and 93.49 is: 129.32
Step by Step Solution
- Step 1: Write the proportion equation
100.02 : 138.35 = 93.49 : x - Step 2: Convert to fraction form
100.02/138.35 = 93.49/x - Step 3: Cross multiply
100.02x = 138.35 × 93.49 - Step 4: Simplify right side
100.02x = 12,933.65 - Step 5: Solve for x
x = 12,933.65/100.02 - Step 6: Final answer
x = 129.32
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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.