Finding the Fourth Proportional to 139,271.91, 192,197.51 and 75,609.75
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Solution
The fourth proportional to 139,271.91, 192,197.51 and 75,609.75 is: 104,342.70
Step by Step Solution
- Step 1: Write the proportion equation
139,271.91 : 192,197.51 = 75,609.75 : x - Step 2: Convert to fraction form
139,271.91/192,197.51 = 75,609.75/x - Step 3: Cross multiply
139,271.91x = 192,197.51 × 75,609.75 - Step 4: Simplify right side
139,271.91x = 14,532,006,307.95 - Step 5: Solve for x
x = 14,532,006,307.95/139,271.91 - Step 6: Final answer
x = 104,342.70
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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.