Finding the Fourth Proportional to 135.78, 187.02 and 102.99
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Solution
The fourth proportional to 135.78, 187.02 and 102.99 is: 141.86
Step by Step Solution
- Step 1: Write the proportion equation
135.78 : 187.02 = 102.99 : x - Step 2: Convert to fraction form
135.78/187.02 = 102.99/x - Step 3: Cross multiply
135.78x = 187.02 × 102.99 - Step 4: Simplify right side
135.78x = 19,261.19 - Step 5: Solve for x
x = 19,261.19/135.78 - Step 6: Final answer
x = 141.86
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.