Finding the Fourth Proportional to 120,630.95, 180,858.94 and 81,089.99
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Solution
The fourth proportional to 120,630.95, 180,858.94 and 81,089.99 is: 121,576.18
Step by Step Solution
- Step 1: Write the proportion equation
120,630.95 : 180,858.94 = 81,089.99 : x - Step 2: Convert to fraction form
120,630.95/180,858.94 = 81,089.99/x - Step 3: Cross multiply
120,630.95x = 180,858.94 × 81,089.99 - Step 4: Simplify right side
120,630.95x = 14,665,849,636.01 - Step 5: Solve for x
x = 14,665,849,636.01/120,630.95 - Step 6: Final answer
x = 121,576.18
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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.