Finding the Fourth Proportional to 139,539.48, 209,306.76 and 39,700.48
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Solution
The fourth proportional to 139,539.48, 209,306.76 and 39,700.48 is: 59,550.02
Step by Step Solution
- Step 1: Write the proportion equation
139,539.48 : 209,306.76 = 39,700.48 : x - Step 2: Convert to fraction form
139,539.48/209,306.76 = 39,700.48/x - Step 3: Cross multiply
139,539.48x = 209,306.76 × 39,700.48 - Step 4: Simplify right side
139,539.48x = 8,309,578,839.24 - Step 5: Solve for x
x = 8,309,578,839.24/139,539.48 - Step 6: Final answer
x = 59,550.02
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1.5x scale
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.