Finding the Fourth Proportional to 125,731.29, 173,509.23 and 69,142.65
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Solution
The fourth proportional to 125,731.29, 173,509.23 and 69,142.65 is: 95,416.88
Step by Step Solution
- Step 1: Write the proportion equation
125,731.29 : 173,509.23 = 69,142.65 : x - Step 2: Convert to fraction form
125,731.29/173,509.23 = 69,142.65/x - Step 3: Cross multiply
125,731.29x = 173,509.23 × 69,142.65 - Step 4: Simplify right side
125,731.29x = 11,996,887,961.66 - Step 5: Solve for x
x = 11,996,887,961.66/125,731.29 - Step 6: Final answer
x = 95,416.88
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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.