Finding the Fourth Proportional to 139,235.17, 192,144.71 and 75,572.99
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Solution
The fourth proportional to 139,235.17, 192,144.71 and 75,572.99 is: 104,290.82
Step by Step Solution
- Step 1: Write the proportion equation
139,235.17 : 192,144.71 = 75,572.99 : x - Step 2: Convert to fraction form
139,235.17/192,144.71 = 75,572.99/x - Step 3: Cross multiply
139,235.17x = 192,144.71 × 75,572.99 - Step 4: Simplify right side
139,235.17x = 14,520,950,247.38 - Step 5: Solve for x
x = 14,520,950,247.38/139,235.17 - Step 6: Final answer
x = 104,290.82
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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.