Finding the Fourth Proportional to 120,345.29, 180,517.94 and 31,598.66
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Solution
The fourth proportional to 120,345.29, 180,517.94 and 31,598.66 is: 47,397.99
Step by Step Solution
- Step 1: Write the proportion equation
120,345.29 : 180,517.94 = 31,598.66 : x - Step 2: Convert to fraction form
120,345.29/180,517.94 = 31,598.66/x - Step 3: Cross multiply
120,345.29x = 180,517.94 × 31,598.66 - Step 4: Simplify right side
120,345.29x = 5,704,124,495.21 - Step 5: Solve for x
x = 5,704,124,495.21/120,345.29 - Step 6: Final answer
x = 47,397.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.