Finding the Fourth Proportional to 101,220.87, 139,553.78 and 69,332.79
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Solution
The fourth proportional to 101,220.87, 139,553.78 and 69,332.79 is: 95,589.50
Step by Step Solution
- Step 1: Write the proportion equation
101,220.87 : 139,553.78 = 69,332.79 : x - Step 2: Convert to fraction form
101,220.87/139,553.78 = 69,332.79/x - Step 3: Cross multiply
101,220.87x = 139,553.78 × 69,332.79 - Step 4: Simplify right side
101,220.87x = 9,675,652,575.78 - Step 5: Solve for x
x = 9,675,652,575.78/101,220.87 - Step 6: Final answer
x = 95,589.50
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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.