Finding the Fourth Proportional to 93.17, 139.95 and 81.02
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Solution
The fourth proportional to 93.17, 139.95 and 81.02 is: 121.70
Step by Step Solution
- Step 1: Write the proportion equation
93.17 : 139.95 = 81.02 : x - Step 2: Convert to fraction form
93.17/139.95 = 81.02/x - Step 3: Cross multiply
93.17x = 139.95 × 81.02 - Step 4: Simplify right side
93.17x = 11,338.05 - Step 5: Solve for x
x = 11,338.05/93.17 - Step 6: Final answer
x = 121.70
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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.