Finding the Fourth Proportional to 134.76, 202.08 and 79.80
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Solution
The fourth proportional to 134.76, 202.08 and 79.80 is: 119.66
Step by Step Solution
- Step 1: Write the proportion equation
134.76 : 202.08 = 79.80 : x - Step 2: Convert to fraction form
134.76/202.08 = 79.80/x - Step 3: Cross multiply
134.76x = 202.08 × 79.80 - Step 4: Simplify right side
134.76x = 16,125.98 - Step 5: Solve for x
x = 16,125.98/134.76 - Step 6: Final answer
x = 119.66
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.