Finding the Fourth Proportional to 172,125.20, 257,967.88 and 138,860.94
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Solution
The fourth proportional to 172,125.20, 257,967.88 and 138,860.94 is: 208,113.99
Step by Step Solution
- Step 1: Write the proportion equation
172,125.20 : 257,967.88 = 138,860.94 : x - Step 2: Convert to fraction form
172,125.20/257,967.88 = 138,860.94/x - Step 3: Cross multiply
172,125.20x = 257,967.88 × 138,860.94 - Step 4: Simplify right side
172,125.20x = 35,821,662,306.61 - Step 5: Solve for x
x = 35,821,662,306.61/172,125.20 - Step 6: Final answer
x = 208,113.99
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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.