Finding the Fourth Proportional to 107.18, 147.93 and 63.53
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Solution
The fourth proportional to 107.18, 147.93 and 63.53 is: 87.68
Step by Step Solution
- Step 1: Write the proportion equation
107.18 : 147.93 = 63.53 : x - Step 2: Convert to fraction form
107.18/147.93 = 63.53/x - Step 3: Cross multiply
107.18x = 147.93 × 63.53 - Step 4: Simplify right side
107.18x = 9,397.99 - Step 5: Solve for x
x = 9,397.99/107.18 - Step 6: Final answer
x = 87.68
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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.