Finding the Fourth Proportional to 135.84, 187.44 and 76.84
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Solution
The fourth proportional to 135.84, 187.44 and 76.84 is: 106.02
Step by Step Solution
- Step 1: Write the proportion equation
135.84 : 187.44 = 76.84 : x - Step 2: Convert to fraction form
135.84/187.44 = 76.84/x - Step 3: Cross multiply
135.84x = 187.44 × 76.84 - Step 4: Simplify right side
135.84x = 14,402.42 - Step 5: Solve for x
x = 14,402.42/135.84 - Step 6: Final answer
x = 106.02
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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.