Finding the Fourth Proportional to 87,113.99, 120,173.04 and 56,916.99
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Solution
The fourth proportional to 87,113.99, 120,173.04 and 56,916.99 is: 78,516.52
Step by Step Solution
- Step 1: Write the proportion equation
87,113.99 : 120,173.04 = 56,916.99 : x - Step 2: Convert to fraction form
87,113.99/120,173.04 = 56,916.99/x - Step 3: Cross multiply
87,113.99x = 120,173.04 × 56,916.99 - Step 4: Simplify right side
87,113.99x = 6,839,887,715.95 - Step 5: Solve for x
x = 6,839,887,715.95/87,113.99 - Step 6: Final answer
x = 78,516.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.