Finding the Fourth Proportional to 125,404.98, 172,887.99 and 89,532.60
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Solution
The fourth proportional to 125,404.98, 172,887.99 and 89,532.60 is: 123,432.99
Step by Step Solution
- Step 1: Write the proportion equation
125,404.98 : 172,887.99 = 89,532.60 : x - Step 2: Convert to fraction form
125,404.98/172,887.99 = 89,532.60/x - Step 3: Cross multiply
125,404.98x = 172,887.99 × 89,532.60 - Step 4: Simplify right side
125,404.98x = 15,479,111,253.47 - Step 5: Solve for x
x = 15,479,111,253.47/125,404.98 - Step 6: Final answer
x = 123,432.99
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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.