Finding the Fourth Proportional to 121.04, 166.97 and 79.55
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Solution
The fourth proportional to 121.04, 166.97 and 79.55 is: 109.73
Step by Step Solution
- Step 1: Write the proportion equation
121.04 : 166.97 = 79.55 : x - Step 2: Convert to fraction form
121.04/166.97 = 79.55/x - Step 3: Cross multiply
121.04x = 166.97 × 79.55 - Step 4: Simplify right side
121.04x = 13,281.23 - Step 5: Solve for x
x = 13,281.23/121.04 - Step 6: Final answer
x = 109.73
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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.