Finding the Fourth Proportional to 99.06, 136.80 and 79.62
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Solution
The fourth proportional to 99.06, 136.80 and 79.62 is: 109.95
Step by Step Solution
- Step 1: Write the proportion equation
99.06 : 136.80 = 79.62 : x - Step 2: Convert to fraction form
99.06/136.80 = 79.62/x - Step 3: Cross multiply
99.06x = 136.80 × 79.62 - Step 4: Simplify right side
99.06x = 10,892.02 - Step 5: Solve for x
x = 10,892.02/99.06 - Step 6: Final answer
x = 109.95
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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.