Finding the Fourth Proportional to 139,961.04, 209,921.84 and 40,129.76
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Solution
The fourth proportional to 139,961.04, 209,921.84 and 40,129.76 is: 60,188.99
Step by Step Solution
- Step 1: Write the proportion equation
139,961.04 : 209,921.84 = 40,129.76 : x - Step 2: Convert to fraction form
139,961.04/209,921.84 = 40,129.76/x - Step 3: Cross multiply
139,961.04x = 209,921.84 × 40,129.76 - Step 4: Simplify right side
139,961.04x = 8,424,113,057.96 - Step 5: Solve for x
x = 8,424,113,057.96/139,961.04 - Step 6: Final answer
x = 60,188.99
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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.