Finding the Fourth Proportional to 139,763.07, 209,468.73 and 75,718.75
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Solution
The fourth proportional to 139,763.07, 209,468.73 and 75,718.75 is: 113,482.84
Step by Step Solution
- Step 1: Write the proportion equation
139,763.07 : 209,468.73 = 75,718.75 : x - Step 2: Convert to fraction form
139,763.07/209,468.73 = 75,718.75/x - Step 3: Cross multiply
139,763.07x = 209,468.73 × 75,718.75 - Step 4: Simplify right side
139,763.07x = 15,860,710,399.69 - Step 5: Solve for x
x = 15,860,710,399.69/139,763.07 - Step 6: Final answer
x = 113,482.84
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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.