Finding the Fourth Proportional to 93.84, 140.64 and 79.44
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Solution
The fourth proportional to 93.84, 140.64 and 79.44 is: 119.06
Step by Step Solution
- Step 1: Write the proportion equation
93.84 : 140.64 = 79.44 : x - Step 2: Convert to fraction form
93.84/140.64 = 79.44/x - Step 3: Cross multiply
93.84x = 140.64 × 79.44 - Step 4: Simplify right side
93.84x = 11,172.44 - Step 5: Solve for x
x = 11,172.44/93.84 - Step 6: Final answer
x = 119.06
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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.