Finding the Fourth Proportional to 139.13, 208.71 and 62.08
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Solution
The fourth proportional to 139.13, 208.71 and 62.08 is: 93.12
Step by Step Solution
- Step 1: Write the proportion equation
139.13 : 208.71 = 62.08 : x - Step 2: Convert to fraction form
139.13/208.71 = 62.08/x - Step 3: Cross multiply
139.13x = 208.71 × 62.08 - Step 4: Simplify right side
139.13x = 12,956.20 - Step 5: Solve for x
x = 12,956.20/139.13 - Step 6: Final answer
x = 93.12
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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.